ci(release): replace standard-version with semantic-release (#1666)

[`standard-version`](https://github.com/conventional-changelog/standard-version/) has been deprecated since May 2022, so it is necessary to stop using it for this project.

[**`semantic-release`**](https://github.com/semantic-release/semantic-release) is available as a more capable alternative to help automate the release process:

1. Updating Node/Gem version numbers
2. Generating changelogs
3. Automating GitHub Releases
4. Building Chirpy-gem and pushing it to RubyGems.org
5. Create commits and tags on the `production` branch
6. Merge the `production` branch into the `master` branch

> ⚠️ Note: Step _6_ may be canceled in CD environments due to merge conflicts, so we need to do this step manually in such cases.

Whenever a commit is pushed to the release branch (`production`), all of the above release processes will be triggered.

.github/workflows/cd.yml

@@ -1,17 +1,37 @@
 name: CD
+
 on:
   push:
-    tags:
-      - "v[0-9]+.[0-9]+.[0-9]+"
     branches:
-      - docs
+      - production
+    tags-ignore:
+      - "**"
 
 jobs:
-  launch:
+  release:
+    permissions:
+      contents: write
+      issues: write
+      pull-requests: write
     runs-on: ubuntu-latest
     steps:
-      - run: |
-          curl -X POST -H "Accept: application/vnd.github+json" \
-            -H "Authorization: Bearer ${{ secrets.GH_PAT }}" \
-            https://api.github.com/repos/${{ secrets.BUILDER }}/dispatches \
-            -d '{"event_type":"deploy", "client_payload":{"branch": "${{ github.ref_name }}"}}'
+      - uses: actions/checkout@v4
+
+      - uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: 3.2
+          bundler-cache: true
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: latest
+
+      - run: npm install
+      - run: npx semantic-release
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GEM_HOST_API_KEY: ${{ secrets.GEM_HOST_API_KEY }}
+
+  publish:
+    needs: release
+    uses: ./.github/workflows/publish.yml

.github/workflows/publish.yml

@@ -0,0 +1,17 @@
+name: Publish
+
+on:
+  push:
+    branches:
+      - docs
+  workflow_call:
+
+jobs:
+  launch:
+    runs-on: ubuntu-latest
+    steps:
+      - run: |
+          curl -X POST -H "Accept: application/vnd.github+json" \
+            -H "Authorization: Bearer ${{ secrets.GH_PAT }}" \
+            https://api.github.com/repos/${{ secrets.BUILDER }}/dispatches \
+            -d '{"event_type":"deploy", "client_payload":{"branch": "${{ github.ref_name }}"}}'