CI: enable manual trigger

ting-yuan · KSP Auto Pick · commit 414d37a6731c · 2024-06-05T18:15:22.000Z
(cherry picked from commit d02b90f)
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
@@ -7,6 +7,8 @@ on:
     branches: [ main, 1.0.22-release, 1.0.21-release ]
   pull_request:
     branches: [ main, 1.0.22-release, 1.0.21-release ]
+  workflow_dispatch:
+    branches: [ main, 1.0.22-release, 1.0.21-release ]
 
 jobs:
   build-and-test:
