fix: remove spurious curly brace

renovate.json

@@ -95,7 +95,7 @@
         "docker-compose",
         "dockerfile"
       ],
-      "versioning": "regex:^(?<major>\\d+})\\.(?<minor>\\d+)\\.(?<patch>\\d+(?:-security-\\d+)?)$",
+      "versioning": "regex:^(?<major>\\d+)\\.(?<minor>\\d+)\\.(?<patch>\\d+(?:-security-\\d+)?)$",
       "matchPackageNames": [
         "/^([^/]+\\/)*grafana/grafana-oss(:.+)?$/"
       ]