Ensure we have a supported ghc version

Author: jneira

.github/workflows/test.yml

@@ -19,6 +19,10 @@ jobs:
         uses: actions/setup-node@v1
         with:
           node-version: 10.x
+      - name: Ensure there is a supported ghc versions
+        uses: haskell/actions/setup@v1
+        with:
+          ghc-version: 9.0.1
       - run: npm ci
       - run: npm run webpack
       - run: xvfb-run -a npm test
@@ -29,6 +33,6 @@ jobs:
         if: failure()
         uses: actions/upload-artifact@v2
         with:
-          name: extension.log
+          name: extension-${{ matrix.os }}.log
           path: test-workspace/hls.log