chore(deps): pin codecov/codecov-action action to eaaf4be (#755)

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

.github/workflows/build.yml

@@ -34,6 +34,6 @@ jobs:
         run: dotnet test --no-build --configuration Debug --collect:"XPlat Code Coverage"
 
       - name: Upload coverage reports to Codecov
-        uses: codecov/codecov-action@v3
+        uses: codecov/codecov-action@eaaf4bedf32dbdc6b720b63067d99c4d77d6047d # v3
         env:
           CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}