Change action branches from main to v3

Author: Denis-Averin

.github/workflows/check-badges.yml

@@ -2,9 +2,9 @@ name: Check badges in README.md
 
 on:
   push:
-    branches: [ main ]
+    branches: [ v3 ]
   pull_request:
-    branches: [ main ]
+    branches: [ v3 ]
 
 jobs:
   build-and-test:

.github/workflows/python-latest.yml

@@ -2,9 +2,9 @@ name: Latest Python Support
 
 on:
   push:
-    branches: [ main ]
+    branches: [ v3 ]
   pull_request:
-    branches: [ main ]
+    branches: [ v3 ]
 
 jobs:
   # Define the job to run before your matrix job

.github/workflows/python-package.yml

@@ -5,9 +5,9 @@ name: Test
 
 on:
   push:
-    branches: [ main ]
+    branches: [ v3 ]
   pull_request:
-    branches: [ main ]
+    branches: [ v3 ]
 
 jobs:
   build:

.github/workflows/twine-check.yml

@@ -2,9 +2,9 @@ name: Check Python package
 
 on:
   push:
-    branches: [ main ]
+    branches: [ v3 ]
   pull_request:
-    branches: [ main ]
+    branches: [ v3 ]
 
 jobs:
   twine-check: