Optimize the workflow trigger conditions. (#359)

Author: Xreki

.github/workflows/Validate-GPU.yml

@@ -4,6 +4,9 @@ on:
   pull_request:
     branches:
       - develop
+    paths:
+      - "samples/**"
+      - "paddle_samples/**"
 
 env:
   PR_ID: ${{ github.event.pull_request.number }}
@@ -31,7 +34,7 @@ jobs:
         with:
           ref: ${{ github.event.pull_request.base.ref }}
           submodules: 'recursive'
-          fetch-depth: 1000
+          fetch-depth: 10
 
       - name: Check bypass
         id: check-bypass