fix: Correct indentation in GitHub Actions workflow (ci.yml)

The 'Upload coverage to Coveralls' step was incorrectly indented,
causing a syntax error in the workflow file. This commit corrects
the indentation to ensure the step is properly recognized by
GitHub Actions.

Author: google-labs-jules[bot]

.github/workflows/ci.yml

@@ -18,9 +18,9 @@ jobs:
         bundler-cache: true # Runs bundle install and caches gems
     - name: Run RSpec
       run: bundle exec rspec
-            - name: Upload coverage to Coveralls
-              uses: coverallsapp/github-action@v2
-              with:
-                github-token: ${{ secrets.GITHUB_TOKEN }}
-                # Default LCOV file path is ./coverage/lcov.info which should be generated
-                # by simplecov-lcov with report_with_single_file = true
+    - name: Upload coverage to Coveralls
+      uses: coverallsapp/github-action@v2
+      with:
+        github-token: ${{ secrets.GITHUB_TOKEN }}
+        # Default LCOV file path is ./coverage/lcov.info which should be generated
+        # by simplecov-lcov with report_with_single_file = true