change root branch name

Author: matt-fidd

.github/workflows/build.yml

@@ -3,7 +3,7 @@ name: Build
 on:
   push:
     branches:
-      - master
+      - main
   pull_request:
     branches: '*'
 

.github/workflows/lint.yml

@@ -3,7 +3,7 @@ name: Linter
 on:
   push:
     branches:
-      - master
+      - main
   pull_request:
     branches: '*'
 

.github/workflows/test.yml

@@ -3,7 +3,7 @@ name: Test
 on:
   push:
     branches:
-      - master
+      - main
   pull_request:
     branches: '*'