Update CI.yml

Author: baggepinnen

.github/workflows/CI.yml

@@ -19,7 +19,7 @@ jobs:
   test:
     name: Julia ${{ matrix.version }} - ${{ matrix.os }} - ${{ matrix.arch }} - ${{ github.event_name }}
 
-    runs-on: self-hosted
+    runs-on: self-hosted-4vcpu-8gb-public
 
     strategy:
       fail-fast: false