Update GH Workers

Author: keylogic1

.github/workflows/build.yml

@@ -39,7 +39,7 @@ env:
 jobs:
   build:
     name: Build & Upload contracts
-    runs-on: self-hosted
+    runs-on: ubicloud-standard-16
     steps:
       - uses: actions/checkout@v3
         with:

.github/workflows/cleanup.yml

@@ -42,7 +42,7 @@ on:
 
 jobs:
   del_runs:
-    runs-on: self-hosted
+    runs-on: ubicloud-standard-8
     steps:
       - name: Delete workflow runs
         uses: Mattraks/delete-workflow-runs@v2