Upgrade to Yarn Berry

.github/workflows/ci.yml

@@ -32,6 +32,8 @@ jobs:
         uses: actions/setup-node@v4
         with:
           node-version: 18
+      - name: Enable Corepack
+        run: corepack enable
       - name: Get yarn cache directory path
         id: yarn-cache-dir-path
         run: echo "dir=$(yarn config get cacheFolder)" >> $GITHUB_OUTPUT
@@ -50,7 +52,7 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-yarn-
       - name: Install yarn packages
-        run: yarn install --pure-lockfile
+        run: yarn install --immutable
 
       - name: Prepare config files
         run: |