use in-house action to publish gem

.github/workflows/publish.yml

@@ -1,25 +1,17 @@
 name: Publish gem
 
 on:
-  push:
+  pull_request:
     branches: [main]
 
 jobs:
   publish:
     name: Build and publish gem
     runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        ruby:
-          - "3.0.6"
     steps:
       - uses: actions/checkout@v3
-      - name: Set up Ruby
-        uses: ruby/setup-ruby@v1
-        with:
-          ruby-version: ${{ matrix.ruby }}
       - name: Publish gem to Gh packages and RubyGems
-        uses: dawidd6/action-publish-gem@v1
+        uses: juliocabrera820/publish-ruby-gem-action@v1.0
         with:
-          api_key: ${{secrets.RUBYGEMS_API_KEY}}
+          rubygems_api_key: ${{secrets.RUBYGEMS_API_KEY}}
           github_token: ${{secrets.GITHUB_TOKEN}}