Separate gem release workflow info three steps

1. Release the gem to rubygems.org (manually triggered); this also creates and pushes a new GitHub tag
2. Create and publish a new GitHub release (automatically triggered by tag push)

Author: egiurleo

.github/workflows/github-release.yml

@@ -0,0 +1,31 @@
+name: Create GitHub Release
+
+on:
+  push:
+    tags:
+      - 'v[0-9]+.[0-9]+.[0-9]+'
+
+jobs:
+  create-release:
+    name: Create GitHub Release
+    runs-on: ubuntu-latest
+
+    permissions:
+      contents: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+
+      - name: Create GitHub release
+        uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8.0.0
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          script: |
+            await github.rest.repos.createRelease({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              tag_name: "${{ github.ref }}",
+              name: "${{ github.ref_name }}",
+              generate_release_notes: true
+            })

.github/workflows/release.yml

@@ -28,22 +28,3 @@ jobs:
 
       - name: Release gem on RubyGems.org
         uses: rubygems/release-gem@1c162a739e8b4cb21a676e97b087e8268d8fc40b # v1.1.2
-
-      - name: Get latest tag
-        id: get_tag
-        run: |
-          TAG=$(git describe --tags --abbrev=0)
-          echo "tag=$TAG" >> $GITHUB_OUTPUT
-
-      - name: Create GitHub release
-        uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8.0.0
-        with:
-          github-token: "${{ secrets.GITHUB_TOKEN }}"
-          script: |
-            await github.rest.repos.createRelease({
-              owner: context.repo.owner,
-              repo: context.repo.repo,
-              tag_name: "refs/tags/${{ steps.get_tag.outputs.tag }}",
-              name: "${{ steps.get_tag.outputs.tag }}",
-              generate_release_notes: true
-            })