Update dokku-vm dokku version to 0.38.4 (#14751)

Co-authored-by: Dokku Bot <no-reply@dokku.com>

Author: dokku-bot

application-workloads/dokku/dokku-vm/azuredeploy.json

@@ -39,7 +39,7 @@
     },
     "dokkuVersion": {
       "type": "string",
-      "defaultValue": "0.38.1",
+      "defaultValue": "0.38.4",
       "metadata": {
         "description": "The Dokku version to launch"
       }

application-workloads/dokku/dokku-vm/main.bicep

@@ -14,7 +14,7 @@ param dnsLabelPrefix string
 param ubuntuOSVersion string = 'ubuntu-24_04-lts'
 
 @description('The Dokku version to launch')
-param dokkuVersion string = '0.38.1'
+param dokkuVersion string = '0.38.4'
 
 @description('Size of the virtual machine')
 param vmSize string = 'Standard_D2S_V6'

application-workloads/dokku/dokku-vm/metadata.json

@@ -5,5 +5,5 @@
   "description": "Dokku is a mini-heroku-style PaaS on a single VM.",
   "summary": "Dokku is a mini-heroku-style PaaS on a single VM. You can easily git-push any Heroku buildpack or Dockerfile app and it'll be hosted on this VM.",
   "githubUsername": "dokku",
-  "dateUpdated": "2026-05-07"
+  "dateUpdated": "2026-05-12"
 }