Fix plugin version constraint

.drone.yml

@@ -14,13 +14,10 @@ steps:
 - name: Debugging information
   image: bv11-cr01.bessems.eu/library/packer-extended
   commands:
-  - |
-    set -x
-
-    yamllint --version
-    packer --version
-    pwsh --version
-    ovftool --version
+  - yamllint --version
+  - packer --version
+  - pwsh --version
+  - ovftool --version
 - name: Windows Server 2019
   image: bv11-cr01.bessems.eu/library/packer-extended
   commands:

packer/windowsserver2019.pkr.hcl

@@ -1,7 +1,7 @@
 packer {
   required_plugins {
     windows-update = {
-      version = "0.12.0"
+      version = ">= 0.12.0"
       source  = "github.com/rgl/windows-update"
     }
   }