update workflows

Author: jeffreychan-optimizely

.github/workflows/run_tests.yml

@@ -6,7 +6,7 @@ name: Run Tests
 
 on:
   push:
-    branches: [ master ]
+    branches: [ main ]
   pull_request:
 
 jobs:

.github/workflows/veracode_scan.yml

@@ -2,7 +2,7 @@ name: Veracode Agent-Based Scan
 
 on:
   push:
-    branches: [ master ]
+    branches: [ main ]
   pull_request:
   schedule:
     - cron: '0 6 * * *'