chore: fix test workflow

Author: nd0ut

.github/workflows/test-and-lint.yml

@@ -9,23 +9,14 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-        with:
-          fetch-depth: 0
-          ref: main
       - uses: actions/setup-node@v2
         with:
-          node-version: '14'
-      - run: |
-          if [ -f "yarn.lock" ]; then
-            yarn install
-          else
-            npm install
-          fi
-      - run: |
-          git config --global user.email "github-actions[bot]@users.noreply.github.com"
-          git config --global user.name "github-actions[bot]"
-      - run: yarn test
-      - run: yarn lint
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          SLACK_INCOMING_HOOK: ${{ secrets.SLACK_INCOMING_HOOK }}
+          node-version: '16'
+      - name: Install dependencies
+        working-directory: ./
+        run: yarn install --frozen-lockfile
+      - name: Run tests
+        run: yarn test
+      - name: Run lint
+        run: yarn lint
+