Update run-processor.yml to run with ubuntu-22.04

.github/workflows/run-processor.yml

@@ -9,7 +9,7 @@ on:
 jobs:
   build:
     # cf. https://docs.github.com/en/github/setting-up-and-managing-billing-and-payments-on-github/about-billing-for-github-actions
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
 
     steps:
     - name: Checkout the repository