bump app-proxy image to 1.3903.0

feat: remove finalizer from git-source template (https://github.com/codefresh-io/argo-platform/pull/6876/files)

Author: ATGardner

charts/gitops-runtime/values.yaml

@@ -495,14 +495,14 @@ app-proxy:
           tag: 1.1.17-main
   image:
     repository: quay.io/codefresh/cap-app-proxy
-    tag: 1.3899.0
+    tag: 1.3903.0
     pullPolicy: IfNotPresent
   # -- Extra volume mounts for main container
   extraVolumeMounts: []
   initContainer:
     image:
       repository: quay.io/codefresh/cap-app-proxy-init
-      tag: 1.3899.0
+      tag: 1.3903.0
       pullPolicy: IfNotPresent
     command:
       - ./init.sh