Add canary release CI

package.json

@@ -1,6 +1,6 @@
 {
   "name": "zod",
-  "version": "3.21.0-canary.20230304T235951",
+  "version": "3.21.0",
   "description": "TypeScript-first schema declaration and validation library with static type inference",
   "main": "./lib/index.js",
   "types": "./index.d.ts",

release-canary.yml

@@ -0,0 +1,45 @@
+# .github/release.yml
+
+name: Release on npm (canary)
+on:
+  push:
+    branches:
+      - "master"
+    paths:
+      - package.json
+
+jobs:
+  build_and_publish:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+          submodules: true
+
+      - name: Set up Node
+        uses: actions/setup-node@v1
+        with:
+          node-version: 16
+
+      - name: Install dependencies
+        run: |
+          yarn install
+
+      - name: Build
+        run: |
+          yarn clean
+          yarn build
+
+      - name: Set version
+        run: |
+          npm minor
+          npm version $(npm pkg get version | sed 's/"//g')-canary.$(date +'%Y%m%dT%H%M%S')
+
+      - id: publish
+        name: Publish to NPM
+        uses: JS-DevTools/npm-publish@v1
+        with:
+          token: ${{ secrets.NPM_TOKEN }}
+          dry-run: true
+          tag: canary