Bump codecov/codecov-action from 4.4.1 to 4.5.0 (google#3193)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/tests.yml

@@ -73,4 +73,4 @@ jobs:
 
     - name: Upload coverage to Codecov
       if: ${{ matrix.update-coverage }}
-      uses: codecov/codecov-action@125fc84a9a348dbcf27191600683ec096ec9021c #v4.4.1
+      uses: codecov/codecov-action@e28ff129e5465c2c0dcc6f003fc735cb6ae0c673 #v4.5.0