chore: Add wowkflow to update snapshots

Author: filzrev

.github/workflows/snapshot.yml

@@ -1,16 +1,14 @@
 name: snapshot
 on:
-  workflow_dispatch :
+  push:
+    branches:
+      - chore-add-snapshot-update-workflow
+  workflow_dispatch:
     inputs:
       dryrun:
         type: boolean
-        description: Set `true` to skip commit diffs.
-        default: false
-      target_branch:
-        type: string
-        description: Target branch to use.
-        required: true
-
+        description: Set `true` to skip diff commits.
+        default: true
 jobs:
   snapshot:
     runs-on: ${{ matrix.os }}
@@ -26,7 +24,7 @@ jobs:
       with:
         ref: ${{ github.event.inputs.target_branch }}
         lfs: true
-    
+
     # Build projects
     - uses: ./.github/actions/build
     - run: dotnet build -c Release samples/extensions/build