ci: run test actions on support branch

Author: jhamman

.github/workflows/minimal.yml

@@ -4,9 +4,9 @@ name: Minimal installation
 
 on:
   push:
-    branches: [ main ]
+    branches: [ main, support/2.x ]
   pull_request:
-    branches: [ main ]
+    branches: [ main, support/2.x ]
 
 jobs:
   minimum_build:

.github/workflows/python-package.yml

@@ -5,9 +5,9 @@ name: Linux Testing
 
 on:
   push:
-    branches: [ main ]
+    branches: [ main, support/2.x ]
   pull_request:
-    branches: [ main ]
+    branches: [ main, support/2.x ]
 
 jobs:
   build:

.github/workflows/windows-testing.yml

@@ -5,9 +5,9 @@ name: Python package
 
 on:
   push:
-    branches: [ main ]
+    branches: [ main, support/2.x ]
   pull_request:
-    branches: [ main ]
+    branches: [ main, support/2.x ]
 
 jobs:
   windows: