[PFMENG-2831] migrate ubuntu-latest to gha dualstack runners

Author: zodilib

.github/workflows/prisma.yaml

@@ -41,7 +41,7 @@ on:
 jobs:
   build-and-scan:
     name: Prisma container scan
-    runs-on: ubuntu-latest
+    runs-on: platform-eng-ent-v2-dual
 
     steps:
       - name: Check out the repository