try explicit branch glob

Signed-off-by: Jared Van Bortel <[email protected]>

.github/workflows/cpp-linter.yml

@@ -2,6 +2,7 @@ name: cpp-linter
 
 on:
   pull_request:
+    branches: '**'
     paths: ['.github/workflows/cpp-linter.yml', '**.c', '**.cpp', '**.h', '**.inl', '**CMakeLists.txt', '**.cmake']
   push:
     branches: [main]