use pnpm

Author: ilya-korotya

.github/workflows/unit-test.yaml

@@ -22,7 +22,7 @@ jobs:
           node-version: 20.16.0
 
       - name: Install dependencies
-        run: yarn install --frozen-lockfile
+        run: pnpm install
 
       - name: Run tests
-        run: yarn test
+        run: pnpm test