Only run parity test & produce coverage for 3.3

Co-Authored-By: Robin Mehner <[email protected]>

Author: kvz

.github/workflows/ci.yml

@@ -31,13 +31,13 @@ jobs:
           ruby-version: ${{ matrix.ruby }}
           bundler-cache: true
       - run: bundle exec standardrb
-      - name: Run tests with coverage
+      - name: Run tests
         env:
-          COVERAGE: 1
-          TEST_NODE_PARITY: 1
+          COVERAGE: ${{ matrix.ruby == '3.3' && '1' || '0' }}
+          TEST_NODE_PARITY: ${{ matrix.ruby == '3.3' && '1' || '0' }}
         run: bundle exec rake test
       - name: Upload coverage to Codecov
-        if: matrix.ruby == 3.3
+        if: matrix.ruby == '3.3'
         uses: codecov/codecov-action@v5
         with:
           token: ${{ secrets.CODECOV_TOKEN }}