chore(deps-dev): bump the bundler group in /docs with 5 updates (#9500)

Bumps the bundler group in /docs with 5 updates:

| Package | From | To |
| --- | --- | --- |
| [jekyll-relative-links](https://github.com/benbalter/jekyll-relative-links) | `0.8.0` | `0.9.1` |
| [jekyll-optional-front-matter](https://github.com/benbalter/jekyll-optional-front-matter) | `0.3.3` | `0.3.4` |
| [jekyll-readme-index](https://github.com/benbalter/jekyll-readme-index) | `0.4.0` | `0.5.1` |
| [jekyll-default-layout](https://github.com/benbalter/jekyll-default-layout) | `0.2.0` | `0.2.1` |
| [jekyll-titles-from-headings](https://github.com/benbalter/jekyll-titles-from-headings) | `0.5.4` | `0.5.7` |


Updates `jekyll-relative-links` from 0.8.0 to 0.9.1
- [Release notes](https://github.com/benbalter/jekyll-relative-links/releases)
- [Changelog](https://github.com/benbalter/jekyll-relative-links/blob/main/CHANGELOG.md)
- [Commits](https://github.com/benbalter/jekyll-relative-links/compare/v0.8.0...v0.9.1)

Updates `jekyll-optional-front-matter` from 0.3.3 to 0.3.4
- [Release notes](https://github.com/benbalter/jekyll-optional-front-matter/releases)
- [Changelog](https://github.com/benbalter/jekyll-optional-front-matter/blob/main/CHANGELOG.md)
- [Commits](https://github.com/benbalter/jekyll-optional-front-matter/compare/v0.3.3...v0.3.4)

Updates `jekyll-readme-index` from 0.4.0 to 0.5.1
- [Release notes](https://github.com/benbalter/jekyll-readme-index/releases)
- [Changelog](https://github.com/benbalter/jekyll-readme-index/blob/main/CHANGELOG.md)
- [Commits](https://github.com/benbalter/jekyll-readme-index/compare/v0.4.0...v0.5.1)

Updates `jekyll-default-layout` from 0.2.0 to 0.2.1
- [Release notes](https://github.com/benbalter/jekyll-default-layout/releases)
- [Changelog](https://github.com/benbalter/jekyll-default-layout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/benbalter/jekyll-default-layout/compare/v0.2.0...v0.2.1)

Updates `jekyll-titles-from-headings` from 0.5.4 to 0.5.7
- [Release notes](https://github.com/benbalter/jekyll-titles-from-headings/releases)
- [Changelog](https://github.com/benbalter/jekyll-titles-from-headings/blob/main/CHANGELOG.md)
- [Commits](https://github.com/benbalter/jekyll-titles-from-headings/compare/v0.5.4...v0.5.7)

---
updated-dependencies:
- dependency-name: jekyll-relative-links
  dependency-version: 0.9.1
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: bundler
- dependency-name: jekyll-optional-front-matter
  dependency-version: 0.3.4
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: bundler
- dependency-name: jekyll-readme-index
  dependency-version: 0.5.1
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: bundler
- dependency-name: jekyll-default-layout
  dependency-version: 0.2.1
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: bundler
- dependency-name: jekyll-titles-from-headings
  dependency-version: 0.5.7
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: bundler
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

docs/Gemfile.lock

@@ -90,7 +90,7 @@ GEM
       coffee-script-source (~> 1.12)
     jekyll-commonmark (1.4.0)
       commonmarker (~> 0.22)
-    jekyll-default-layout (0.2.0)
+    jekyll-default-layout (0.2.1)
       jekyll (>= 3.0, < 5.0)
     jekyll-gist (1.5.0)
       octokit (~> 4.2)
@@ -98,16 +98,15 @@ GEM
       jekyll (>= 3.4, < 5.0)
       octokit (>= 4, < 7, != 4.4.0)
     jekyll-i18n_tags (1.0.0)
-    jekyll-optional-front-matter (0.3.3)
+    jekyll-optional-front-matter (0.3.4)
       jekyll (>= 3.0, < 5.0)
-    jekyll-readme-index (0.4.0)
+    jekyll-readme-index (0.5.1)
       jekyll (>= 3.0, < 5.0)
-      kramdown-parser-gfm (~> 1.1)
-    jekyll-relative-links (0.8.0)
+    jekyll-relative-links (0.9.1)
       jekyll (>= 3.3, < 5.0)
     jekyll-sass-converter (3.1.0)
       sass-embedded (~> 1.75)
-    jekyll-titles-from-headings (0.5.4)
+    jekyll-titles-from-headings (0.5.7)
       jekyll (>= 3.3, < 5.0)
     jekyll-watch (2.2.1)
       listen (~> 3.0)
@@ -138,36 +137,36 @@ GEM
     rexml (3.4.4)
     rouge (4.7.0)
     safe_yaml (1.0.5)
-    sass-embedded (1.105.1)
+    sass-embedded (1.106.1)
       google-protobuf (~> 4.31)
       rake (~> 13.3)
-    sass-embedded (1.105.1-aarch64-linux-android)
+    sass-embedded (1.106.1-aarch64-linux-android)
       google-protobuf (~> 4.31)
-    sass-embedded (1.105.1-aarch64-linux-gnu)
+    sass-embedded (1.106.1-aarch64-linux-gnu)
       google-protobuf (~> 4.31)
-    sass-embedded (1.105.1-aarch64-linux-musl)
+    sass-embedded (1.106.1-aarch64-linux-musl)
       google-protobuf (~> 4.31)
-    sass-embedded (1.105.1-arm-linux-androideabi)
+    sass-embedded (1.106.1-arm-linux-androideabi)
       google-protobuf (~> 4.31)
-    sass-embedded (1.105.1-arm-linux-gnueabihf)
+    sass-embedded (1.106.1-arm-linux-gnueabihf)
       google-protobuf (~> 4.31)
-    sass-embedded (1.105.1-arm-linux-musleabihf)
+    sass-embedded (1.106.1-arm-linux-musleabihf)
       google-protobuf (~> 4.31)
-    sass-embedded (1.105.1-arm64-darwin)
+    sass-embedded (1.106.1-arm64-darwin)
       google-protobuf (~> 4.31)
-    sass-embedded (1.105.1-riscv64-linux-android)
+    sass-embedded (1.106.1-riscv64-linux-android)
       google-protobuf (~> 4.31)
-    sass-embedded (1.105.1-riscv64-linux-gnu)
+    sass-embedded (1.106.1-riscv64-linux-gnu)
       google-protobuf (~> 4.31)
-    sass-embedded (1.105.1-riscv64-linux-musl)
+    sass-embedded (1.106.1-riscv64-linux-musl)
       google-protobuf (~> 4.31)
-    sass-embedded (1.105.1-x86_64-darwin)
+    sass-embedded (1.106.1-x86_64-darwin)
       google-protobuf (~> 4.31)
-    sass-embedded (1.105.1-x86_64-linux-android)
+    sass-embedded (1.106.1-x86_64-linux-android)
       google-protobuf (~> 4.31)
-    sass-embedded (1.105.1-x86_64-linux-gnu)
+    sass-embedded (1.106.1-x86_64-linux-gnu)
       google-protobuf (~> 4.31)
-    sass-embedded (1.105.1-x86_64-linux-musl)
+    sass-embedded (1.106.1-x86_64-linux-musl)
       google-protobuf (~> 4.31)
     sawyer (0.9.3)
       addressable (>= 2.3.5)