Remove the matrix for now.

Author: vmcj

.github/workflows/unit-tests.yml

@@ -40,7 +40,8 @@ jobs:
       - name: Install DOMjudge
         run: .github/jobs/baseinstall.sh unit install test
       - name: Run the unit tests
-        run: .github/jobs/unit-tests.sh ${{ matrix.PHPVERSION }} ${{ matrix.TEST }}
+        run: .github/jobs/unit-tests.sh "8.1" "Unit"
+        # ${{ matrix.PHPVERSION }} ${{ matrix.TEST }}
       - name: Upload artifact for debugging
         uses: actions/upload-artifact@v4
         if: ${{ !cancelled() }}