Update azure-sdk-build-tools Repository Resource Refs in Yaml files

Author: azure-sdk

eng/pipelines/1es-redirect.yml

@@ -7,7 +7,7 @@ resources:
     - repository: azure-sdk-build-tools
       type: git
       name: internal/azure-sdk-build-tools
-      ref: refs/tags/azure-sdk-build-tools_20250603.2
+      ref: refs/tags/azure-sdk-build-tools_20250917.2
     - repository: azure-sdk-tools
       type: github
       name: Azure/azure-sdk-tools

eng/pipelines/mgmt-mocktest.yml

@@ -24,7 +24,7 @@ resources:
     - repository: azure-sdk-build-tools
       type: git
       name: internal/azure-sdk-build-tools
-      ref: refs/tags/azure-sdk-build-tools_20250603.2
+      ref: refs/tags/azure-sdk-build-tools_20250917.2
 
 stages:
   - stage: 'Build_and_Test'