Add shell: bash

.github/actions/android-build/action.yml

@@ -56,6 +56,7 @@ runs:
         minimum_coverage: 80
         fail_below_threshold: false
     - name: Add coverage report to workflow run summary
+      shell: bash
       run: |
         echo "| Outcome | Value |" >> $GITHUB_STEP_SUMMARY
         echo "| --- | --- |" >> $GITHUB_STEP_SUMMARY