Quick fix for retain runs (Azure#18001)

Urgently need to fix this to unblock pipelines.

Author: mitchdenny

eng/pipelines/templates/stages/archetype-python-release.yml

@@ -56,7 +56,7 @@ stages:
                         ReleaseSha: $(Build.SourceVersion)
                         RepoId: Azure/azure-sdk-for-python
                         WorkingDirectory: $(System.DefaultWorkingDirectory)
-                    - template: eng/common/pipelines/templates/steps/retain-run.yml
+                    - template: /eng/common/pipelines/templates/steps/retain-run.yml
 
           - ${{if ne(artifact.skipPublishPackage, 'true')}}:
             - deployment: PublishPackage