Bumping CPI bosh-azure-cpi to version 53.1.8

Author: CI Bot

azure/cpi.yml

@@ -3,9 +3,9 @@
   type: replace
   value:
     name: bosh-azure-cpi
-    sha1: 31c948fb1fdfd60226b6595d992c8a9f4fe76c4f
-    url: https://bosh.io/d/github.com/cloudfoundry/bosh-azure-cpi-release?v=53.1.7
-    version: 53.1.7
+    sha1: 2fd7d10b9e548fa65ba64431e23dc98425d9b038
+    url: https://bosh.io/d/github.com/cloudfoundry/bosh-azure-cpi-release?v=53.1.8
+    version: 53.1.8
 - name: stemcell
   path: /resource_pools/name=vms/stemcell?
   type: replace