updates CI

Author: kdschlosser

.github/workflows/unix.yml

@@ -9,7 +9,7 @@ on:
 jobs:
   build_esp32:
     if: ${{ github.event_name != 'pull_request' || github.repository != github.event.pull_request.head.repo.full_name }}
-    runs-on: self-hosted
+    runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4