chore(deps): update actions/setup-go action to v6

Author: renovate[bot]

.github/workflows/push_pr.yaml

@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - uses: actions/setup-go@v5
+      - uses: actions/setup-go@v6
         with:
           go-version-file: 'tests/integration/go.mod'
       - uses: newrelic/newrelic-infra-checkers@v1