change branch names, this repo is old school so using old mainline name

Author: rpcme

.github/workflows/ci.yml

@@ -1,11 +1,13 @@
 name: Thingpress Continuous Integration
+
 on:
   push:
     branches:
-      - main
+      - master
   pull_request:
     branches:
-      - main
+      - master
+
 jobs:
     CI:
         runs-on: ubuntu-24.04-arm

.github/workflows/coverage.yml

@@ -4,7 +4,7 @@ run-name: ${{ github.actor }} invoking coverage
 on:
   push:
     branches:
-      - main
+      - master
 
 jobs:
     CoverageAndLinting: