[GHA] Updated 2-cores runner name (#21426)

* updated the name

* manual trigger

.github/workflows/cleanup_pip_cache.yml

@@ -1,12 +1,13 @@
 name: Cleanup PIP caches
 on:
+  workflow_dispatch:
   schedule:
     # at 00:00 on the 1st day of every month
     - cron: '0 0 1 * *'
 
 jobs:
   Cleanup_PIP_Caches:
-    runs-on: aks-linux-2-cores
+    runs-on: aks-linux-2-cores-8gb
     container:
       image: openvinogithubactions.azurecr.io/dockerhub/ubuntu:20.04
       volumes: