ci: bump codecov/codecov-action in the github-actions group (#20)

Bumps the github-actions group with 1 update: [codecov/codecov-action](https://github.com/codecov/codecov-action).

Updates `codecov/codecov-action` from 5.1.1 to 5.1.2

.github/workflows/coverage.yml

@@ -37,7 +37,7 @@ jobs:
                 go test -coverprofile=coverage.txt -covermode=atomic -coverpkg=./pkg/... ./tests/unit/...
 
           - name: Upload coverage to Codecov
-            uses: codecov/[email protected].1
+            uses: codecov/[email protected].2
             with:
                 token: ${{ secrets.CODECOV_TOKEN }}
                 files: ./coverage.txt