{CI} Speed up CLI linter and style checks with multicore agents (#31688)

Author: bebound

azure-pipelines.yml

@@ -1022,7 +1022,7 @@ jobs:
   displayName: "Check CLI Style"
   timeoutInMinutes: 120
   pool:
-    name: ${{ variables.ubuntu_pool }}
+    name: ${{ variables.ubuntu_multi_core_pool }}
   steps:
   - task: UsePythonVersion@0
     displayName: 'Use Python 3.12'
@@ -1084,7 +1084,7 @@ jobs:
   displayName: "Check CLI Linter"
 
   pool:
-    name: ${{ variables.ubuntu_pool }}
+    name: ${{ variables.ubuntu_multi_core_pool }}
   steps:
   - task: UsePythonVersion@0
     displayName: 'Use Python 3.12'