ci: increase the max memory value to detect regression

Author: krichprollsch

.github/workflows/e2e-test.yml

@@ -62,7 +62,7 @@ jobs:
     needs: zig-build-release
 
     env:
-      MAX_MEMORY: 25000
+      MAX_MEMORY: 28000
       MAX_AVG_DURATION: 24
 
     runs-on: ubuntu-latest