build: update release workflow

Author: mob-sakai

.github/workflows/release.yml

@@ -0,0 +1,23 @@
+name: release
+
+on:
+  push:
+    branches:
+      - preview
+      - master
+      - v*.x
+    tags-ignore:
+      - "**"
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    if: "! contains(github.event.head_commit.message, '[skip ci]') && ! contains(github.event.head_commit.message, '[ci skip]')"
+    steps:
+      - uses: actions/checkout@v2
+
+      - run: |
+          npm i https://gist.github.com/mob-sakai/c90044338361af97a7e8c8a78425bdb3
+          npx semantic-release -e @mob-sakai/semantic-release-upm
+        env:
+          GITHUB_TOKEN: ${{ github.token }}