Fix yarn

Author: timfish

.github/workflows/ci.yml

@@ -22,6 +22,8 @@ jobs:
         uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4
         with:
           node-version-file: "package.json"
+      - name: Install Yarn (if not yet installed)
+        run: yarn --version || npm install -g yarn@1.22.22
       - name: Install dependencies
         run: yarn install --ignore-engines --ignore-scripts --frozen-lockfile
       - name: Lint