update branch name

Author: lkdvos

.github/workflows/format.yml

@@ -2,7 +2,7 @@ name: Runic formatting
 on:
   push:
     branches:
-      - 'master'
+      - 'main'
       - 'release-'
     tags:
       - '*'
@@ -13,10 +13,6 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v6
-      # - uses: julia-actions/setup-julia@v2
-      #   with:
-      #     version: '1'
-      # - uses: julia-actions/cache@v2
       - uses: fredrikekre/runic-action@v1
         with:
           version: '1'