Merge pull request #5730 from Expensify/john-move-cla-main

Migrate CLA to main when referencing

.github/workflows/cla.yml

@@ -33,7 +33,7 @@ jobs:
           with:
               path-to-signatures: '${{ github.repository }}/cla.json'
               path-to-document: 'https://github.com/${{ github.repository }}/blob/main/CLA.md'
-              branch: 'master'
+              branch: 'main'
               remote-organization-name: 'Expensify'
               remote-repository-name: 'CLA'
               lock-pullrequest-aftermerge: false