ci: update release please workflow to run yarn (#113)

Author: orinokai

.github/workflows/release-please.yml

@@ -27,6 +27,9 @@ jobs:
           check-latest: true
           registry-url: 'https://registry.npmjs.org'
         if: ${{ steps.release.outputs.release_created }}
+      - name: Install dependencies
+        run: yarn
+        if: ${{ steps.release.outputs.release_created }}
       - run: npm publish
         if: ${{ steps.release.outputs.release_created }}
         env: