ci: use rubygems/release-gem to publish gem

temporarily remove publishing to GH packages

.github/workflows/publish.yml

@@ -4,10 +4,6 @@ on:
   release:
     types: [published]
 
-permissions:
-  packages: write
-  contents: read
-
 jobs:
   tests:
     uses: ./.github/workflows/tests.yml
@@ -18,6 +14,12 @@ jobs:
 
     needs: tests
 
+    permissions:
+      packages: write
+      contents: read
+      attestations: write
+      id-token: write
+
     steps:
     - uses: actions/checkout@v4
 
@@ -26,26 +28,4 @@ jobs:
         rubygems: latest
         bundler-cache: true
 
-    - name: Create credentials file
-      run: |
-        mkdir -p $HOME/.gem
-        touch $HOME/.gem/credentials
-        chmod 600 $HOME/.gem/credentials
-        echo ":github: Bearer ${GITHUB_TOKEN}" >> ~/.gem/credentials
-        echo ":rubygems_api_key: Bearer ${RUBYGEMS_AUTH_TOKEN}" > ~/.gem/credentials
-
-    - name: Build gem
-      run: gem build *.gemspec
-
-    - name: Publish to Github Packages
-      run: |
-        gem push --KEY github --host https://rubygems.pkg.github.com/${OWNER} *.gem
-      env:
-        GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}
-        OWNER: rafasoares
-
-    - name: Publish to RubyGems
-      run: |
-        gem push *.gem
-      env:
-        RUBYGEMS_AUTH_TOKEN: ${{secrets.RUBYGEMS_AUTH_TOKEN}}
+    - uses: rubygems/release-gem@v1