Update GitHub Actions workflows. (#1505)

This PR was automatically generated by the
update-workflows-ecosystem-providers workflow in the pulumi/ci-mgmt
repo, from commit 85f223eca6fe9fcab4854b3fd4e4f9cb8a04f021.

Author: pulumi-bot

.github/workflows/prerequisites.yml

@@ -78,7 +78,7 @@ jobs:
     - name: Unit-test provider code
       run: make test_provider
     - name: Upload coverage reports to Codecov
-      uses: codecov/codecov-action@1e68e06f1dbfde0e4cefc87efeba9e4643565303 # v5.1.2
+      uses: codecov/codecov-action@5a605bd92782ce0810fa3b8acc235c921b497052 # v5.2.0
       env:
         CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
     - if: inputs.is_pr