fix branch name in gh workflow

Author: LeonieFierz

.github/workflows/embedded_quality_check.yml

@@ -4,7 +4,7 @@ on:
   push:
   pull_request:
     branches:
-      - main
+      - master
 jobs:
   driver-quality:
     uses: sensirion/.github/.github/workflows/driver.c.check.yml@main