Switch Linux back to cross builds

Author: lool

.github/workflows/linux.yml

@@ -33,9 +33,9 @@ concurrency:
 jobs:
   build-linux-deb:
     # for cross-builds
-    #runs-on: [self-hosted, x86]
+    runs-on: [self-hosted, x86]
     # alternative for native builds, but overkill to do both
-    runs-on: [self-hosted, arm64, debbuilder]
+    #runs-on: [self-hosted, arm64, debbuilder]
     container:
       image: debian:trixie
       volumes: