chore: Support test runs on v1 pull requests

Change-Id: Ifcfa08f31513e6b25023dbe81d3de70645912303

Author: Copybara

.github/workflows/pre-commit.yml

@@ -16,13 +16,13 @@ name: Pre-commit Checks
 
 on:
   push:
-    branches: [main, v2]
+    branches: [main, v1, v2]
     paths:
       - '**.py'
       - '.pre-commit-config.yaml'
       - 'pyproject.toml'
   pull_request:
-    branches: [main, v2]
+    branches: [main, v1, v2]
     paths:
       - '**.py'
       - '.pre-commit-config.yaml'

.github/workflows/python-unit-tests.yml

@@ -2,9 +2,9 @@ name: Python Unit Tests
 
 on:
   push:
-    branches: [ main ]
+    branches: [main, v1, v2]
   pull_request:
-    branches: [ main, v2 ]
+    branches: [main, v1, v2]
 
 permissions:
   contents: read