mmar-patcher: Use v7.5.1 by default

Author: tytydraco

.github/workflows/mmar-patcher.yml

@@ -5,7 +5,7 @@ on:
       version:
         description: 'Magisk Manager Version'
         required: true
-        default: 'v7.5.0'
+        default: 'v7.5.1'
 jobs:
   build:
     runs-on: ubuntu-latest