add manual deploy option in github actions

Author: cdeline

.github/workflows/deploy.yaml

@@ -1,6 +1,12 @@
 name: Deploy Python Package
 
 on:
+  workflow_dispatch:
+    inputs:
+      ref:
+        description: 'Git ref to deploy (tag or branch), e.g. 0.5.2'
+        required: true
+        default: '0.5.2'
   release:
     types: [published]
 
@@ -12,7 +18,10 @@ jobs:
       id-token: write
 
     steps:
-      - uses: actions/checkout@v4
+      - name: Check out selected ref
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ github.event.inputs.ref || github.ref }}
 
       - name: Set up Python
         uses: actions/setup-python@v5