Update release-gem.yml

Author: aravindbuilt

.github/workflows/release-gem.yml

@@ -15,17 +15,13 @@ jobs:
     steps:
     - uses: actions/checkout@v3
     - name: Set up Ruby 2.7
-      uses: actions/setup-ruby@v1
+      uses: ruby/setup-ruby@v1
       with:
-        ruby-version: 2.7.x
+        ruby-version: '2.7'
 
     - name: Publish to RubyGems
       run: |
-        mkdir -p $HOME/.gem
-        touch $HOME/.gem/credentials
-        chmod 0600 $HOME/.gem/credentials
-        printf -- "---\n:rubygems_api_key: ${GEM_HOST_API_KEY}\n" > $HOME/.gem/credentials
         gem build *.gemspec
         gem push *.gem
       env:
-        GEM_HOST_API_KEY: "${{secrets.RUBYGEMS_AUTH_TOKEN}}"
+        GEM_HOST_API_KEY: ${{ secrets.RUBYGEMS_AUTH_TOKEN }}