Unique artifact names

Author: anakinj

.github/workflows/test.yml

@@ -73,7 +73,7 @@ jobs:
       - name: Upload test coverage folder for later reporting
         uses: actions/upload-artifact@v4
         with:
-          name: coverage-reports
+          name: coverage-${{ matrix.os }}-${{ matrix.ruby }}-${{ matrix.gemfile }}
           path: coverage-*/*.json
           retention-days: 1
 
@@ -89,8 +89,6 @@ jobs:
 
       - name: Download coverage reports from the test job
         uses: actions/download-artifact@v4
-        with:
-          name: coverage-reports
 
       - uses: paambaati/codeclimate-action@v9.0.0
         with: