Bump 0.3.8 readme

deploy/charts/external-secrets/README.md

@@ -4,7 +4,7 @@
 
 [//]: # (README.md generated by gotmpl. DO NOT EDIT.)
 
-![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![Version: 0.3.7](https://img.shields.io/badge/Version-0.3.7-informational?style=flat-square)
+![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![Version: 0.3.8](https://img.shields.io/badge/Version-0.3.8-informational?style=flat-square)
 
 External secret management for Kubernetes