release: bump to latest EsrpClientTool task v5

Update the EsrpClientTool installer task from v4 to v5.

Signed-off-by: Matthew John Cheetham <mjcheetham@outlook.com>

Author: mjcheetham

.azure-pipelines/esrp/windows/setup.yml

@@ -9,7 +9,7 @@ parameters:
     type: string
 
 steps:
-  - task: EsrpClientTool@4
+  - task: EsrpClientTool@5
     name: esrpinstall
     displayName: 'Install ESRP client'
   - task: AzureCLI@2