Update rust.yml

Get workflow on pull requests.

Signed-off-by: DorianCoding <[email protected]>

Author: DorianCoding

.github/workflows/rust.yml

@@ -13,6 +13,8 @@ on:
   push:
     tags:
       - v[0-9]+.*
+  pull_request:
+    branches: [ "main" ]
 
 permissions:
   contents: write