chore(ci): enable caching

.github/workflows/main.yaml

@@ -10,9 +10,10 @@ jobs:
       - uses: actions/setup-node@v4
         with:
           node-version: 20
+          cache: 'yarn'
         name: Setup node
       - name: Install dependencies
-        run: yarn
+        run: yarn install --frozen-lockfile
       - name: Run linter
         run: yarn lint
       - name: Run tests