fix: support trailing commas in JSONC config files

Replace custom strip_jsonc_comments function with json-strip-comments crate
which properly handles both comments and trailing commas.

Also reverts biome dependency versions to pre-pretty-printer state to fix
build failures caused by incompatible biome crate versions.

Fixes #669

Author: psteinroe

.github/actions/setup-postgres/action.yml

@@ -35,8 +35,8 @@ runs:
         echo "Extension directory: $(pg_config --sharedir)/extension"
         echo "Library directory: $(pg_config --pkglibdir)"
 
-        # Clone and build plpgsql_check
-        git clone https://github.com/okbob/plpgsql_check.git
+        # Clone and build plpgsql_check (pinned to v2.7.11 for PG15 compatibility)
+        git clone --branch v2.7.11 --depth 1 https://github.com/okbob/plpgsql_check.git
         cd plpgsql_check
 
         # Clean and compile

.gitignore

@@ -50,3 +50,4 @@ test-results/
 site/
 
 biome-main/
+.review/