fix default branch in snap ci

Author: artivis

.github/workflows/snap.yml

@@ -4,10 +4,10 @@ on:
     tags:
       - '*'
     branches:
-      - main
+      - master
   pull_request:
     branches:
-      - main
+      - master
   workflow_dispatch:
 
 jobs:
@@ -33,7 +33,7 @@ jobs:
         path: ${{ steps.build-snap.outputs.snap }}
 
   publish:
-    if: github.ref == 'refs/heads/main' || startsWith(github.ref, 'refs/tags/')
+    if: github.ref == 'refs/heads/master' || startsWith(github.ref, 'refs/tags/')
     runs-on: ubuntu-latest
     needs: build
     steps: