ci: run workflows on .github changes

Author: krichprollsch

.github/workflows/zig-test.yml

@@ -11,6 +11,7 @@ on:
       - "src/**/*.zig"
       - "src/*.zig"
       - "*.zig"
+      - ".github/**"
   pull_request:
 
     # By default GH trigger on types opened, synchronize and reopened.
@@ -26,6 +27,7 @@ on:
       - "src/**/*.zig"
       - "src/*.zig"
       - "*.zig"
+      - ".github/**"
   # Allows you to run this workflow manually from the Actions tab
   workflow_dispatch: