ci: update actions/setup-go action to v5 (#35)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/test.yaml

@@ -18,7 +18,7 @@ jobs:
       - name: Check out code into the Go module directory
         uses: actions/checkout@v3
 
-      - uses: actions/setup-go@v4
+      - uses: actions/setup-go@v5
         with:
           go-version: "${{ matrix.go_version }}"
           cache: true