refactor: reflect renamed default branch

site.Params.edit_page.repo_branch will now also default to `main` if unset.

.github/stale.yml

@@ -15,7 +15,7 @@ staleLabel: stale
 markComment: |
   This issue has been automatically marked as stale because it has not had any recent activity. The resources of the project maintainers are limited, and so we are asking for your help.
 
-  If this is a **bug** and you can still reproduce this error on the <code>master</code> branch, consider contributing a Pull Request with a fix.
+  If this is a **bug** and you can still reproduce this error on the <code>main</code> branch, consider contributing a Pull Request with a fix.
 
   If this is a **feature request**, and you feel that it is still relevant and valuable, please tell us why or contribute a Pull Request for review.
 

.github/workflows/build-test-site.yaml

@@ -3,10 +3,10 @@ name: Continuous Integration
 on:
   push:
     branches:
-      - master
+      - main
   pull_request:
     branches:
-      - master
+      - main
 
 jobs:
   build:

.github/workflows/codeql-analysis.yml

@@ -13,10 +13,10 @@ name: "CodeQL"
 
 on:
   push:
-    branches: [ master ]
+    branches: [ main ]
   pull_request:
     # The branches below must be a subset of the branches above
-    branches: [ master ]
+    branches: [ main ]
   schedule:
     - cron: '27 23 * * 5'