chore: Configure Trusted Publishing

.github/workflows/main.yml

@@ -4,7 +4,6 @@ on:
   push:
     branches:
       - main
-      - master
 
   pull_request:
 

.github/workflows/publish.yml

@@ -0,0 +1,31 @@
+name: Publish Gem
+
+on:
+  push:
+    tags:
+      - 'v*'
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    environment: publish
+    permissions:
+      id-token: write
+      contents: read
+
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
+
+      - name: Set up Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: '4.0'
+          bundler-cache: true
+
+      - name: Build gem
+        run: gem build fmcache.gemspec
+
+      - name: Publish to RubyGems
+        uses: rubygems/release-gem@v1