enable pnpm (#6)

* enable pnpm

* add cache

Author: sinisastanic

.github/workflows/publish.yml

@@ -7,10 +7,17 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
+
+      - uses: pnpm/action-setup@v2.2.4
+        with:
+          version: latest
+
       - uses: actions/setup-node@v3
         with:
           node-version: 18
           registry-url: "https://registry.npmjs.org"
+          cache: "pnpm"
+
       - run: pnpm i
       - run: pnpm publish --access public
         env: