Update docs to indicate PostgreSQL 13+ requirement

docs/installation/index.md

@@ -21,7 +21,7 @@ The following sections detail how to set up a new instance of NetBox:
 | Dependency | Supported Versions |
 |------------|--------------------|
 | Python     | 3.10, 3.11, 3.12   |
-| PostgreSQL | 12+                |
+| PostgreSQL | 13+                |
 | Redis      | 4.0+               |
 
 Below is a simplified overview of the NetBox application stack for reference:

docs/installation/upgrading.md

@@ -20,7 +20,7 @@ NetBox requires the following dependencies:
 | Dependency | Supported Versions |
 |------------|--------------------|
 | Python     | 3.10, 3.11, 3.12   |
-| PostgreSQL | 12+                |
+| PostgreSQL | 13+                |
 | Redis      | 4.0+               |
 
 ## 3. Install the Latest Release