build(deps)/CI: Bump ikalnytskyi/action-setup-postgres from 4 to 5 and update GHA matrix configuration (#1449)

* build(deps): bump ikalnytskyi/action-setup-postgres from 4 to 5

Bumps [ikalnytskyi/action-setup-postgres](https://github.com/ikalnytskyi/action-setup-postgres) from 4 to 5.
- [Release notes](https://github.com/ikalnytskyi/action-setup-postgres/releases)
- [Commits](https://github.com/ikalnytskyi/action-setup-postgres/compare/v4...v5)

---
updated-dependencies:
- dependency-name: ikalnytskyi/action-setup-postgres
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

* CI: Update GHA matrix config based on new postgres update

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Adrian Gallagher <adrian.gallagher@thrasher.io>

.github/workflows/tests.yml

@@ -23,7 +23,7 @@ jobs:
             skip_wrapper_tests: true
           - os: macos-13 # beta
             goarch: amd64
-            psql: false 
+            psql: true
             skip_wrapper_tests: true
           - os: windows-latest
             goarch: amd64
@@ -40,7 +40,7 @@ jobs:
 
     - name: Setup Postgres
       if: matrix.psql == true
-      uses: ikalnytskyi/action-setup-postgres@v4
+      uses: ikalnytskyi/action-setup-postgres@v5
       with:
         database: gct_dev_ci
       id: postgres
@@ -80,7 +80,7 @@ jobs:
       shell: bash
 
     - name: Test
-      run: |
+      run: | # PGSERVICEFILE isn't supported by lib/pq and will cause a panic if set
         unset PGSERVICEFILE
         if [ "${{ matrix.goarch }}" = "386" ]; then
           go test -coverprofile coverage.txt -covermode atomic ./...