Add back master checkout for flows

Author: aidangarske

.github/workflows/cppcheck.yml

@@ -2,7 +2,7 @@ name: CppCheck code linter
 
 on:
   push:
-    branches: [ '*' ]
+    branches: [ 'master', 'main', 'release/**' ]
   pull_request:
     branches: [ '*' ]
 

.github/workflows/freebsd.yml

@@ -2,7 +2,7 @@ name: FreeBSD interop tests
 
 on:
   push:
-    branches: [ '*' ]
+    branches: [ 'master', 'main', 'release/**' ]
   pull_request:
     branches: [ '*' ]
 

.github/workflows/linux.yml

@@ -2,7 +2,7 @@ name: Linux interop tests
 
 on:
   push:
-    branches: [ '*' ]
+    branches: [ 'master', 'main', 'release/**' ]
   pull_request:
     branches: [ '*' ]
 

.github/workflows/macos.yml

@@ -2,7 +2,7 @@ name: macOS interop tests
 
 on:
   push:
-    branches: [ '*' ]
+    branches: [ 'master', 'main', 'release/**' ]
   pull_request:
     branches: [ '*' ]