Update update-readme.yml

Author: nolim1t

.github/workflows/update-readme.yml

@@ -11,7 +11,7 @@ on:
 jobs:
   sync:
     name: Update README to Docker Hub
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v2.0.0
       - name: Sync README.md and Description to Docker Hub using meeDamian action (my fork)