main rename

fixes #116341

.github/workflows/build-chat.yml

@@ -7,7 +7,7 @@ on:
     types:
       - completed
     branches:
-      - master
+      - main
       - release/*
 
 jobs:

.github/workflows/ci.yml

@@ -3,11 +3,11 @@ name: CI
 on:
   push:
     branches:
-      - master
+      - main
       - release/*
   pull_request:
     branches:
-      - master
+      - main
       - release/*
 
 jobs:

.github/workflows/devcontainer-cache.yml

@@ -2,9 +2,9 @@ name: VS Code Repo Dev Container Cache Image Generation
 
 on:
   push:
-    # Currently doing this for master, but could be done for PRs as well
+    # Currently doing this for main, but could be done for PRs as well
     branches:
-      - "master"
+      - "main"
 
     # Only updates to these files result in changes to installed packages, so skip otherwise
     paths:
@@ -35,6 +35,6 @@ jobs:
           az acr login --name $ACR_REGISTRY_NAME
 
           GIT_BRANCH=$(echo "${{ github.ref }}" | grep -oP 'refs/(heads|tags)/\K(.+)')
-          if [ "$GIT_BRANCH" == "" ]; then GIT_BRANCH=master; fi
+          if [ "$GIT_BRANCH" == "" ]; then GIT_BRANCH=main; fi
 
           .devcontainer/cache/build-cache-image.sh "${{ secrets.CONTAINER_IMAGE_REGISTRY }}/public/vscode/devcontainers/repos/microsoft/vscode" "${GIT_BRANCH}"

.github/workflows/rich-navigation.yml

@@ -3,7 +3,7 @@ on:
   pull_request:
   push:
     branches:
-      - master
+      - main
 
 jobs:
   richnav: