add release task

Author: le0pard

.github/workflows/main.yml

@@ -21,7 +21,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1

.github/workflows/release.yml

@@ -0,0 +1,29 @@
+name: Push gem to RubyGems.org
+
+on:
+  push:
+    tags:
+      - 'v*'
+
+jobs:
+  push:
+    name: Push gem to RubyGems.org
+    runs-on: ubuntu-latest
+    environment:
+      name: production
+    permissions:
+      id-token: write
+      contents: write
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v5
+        with:
+          persist-credentials: false
+
+      - name: Set up Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          bundler-cache: true
+
+      - name: Release gem
+        uses: rubygems/release-gem@v1