Update xpkg.upbound.io/crossplane-contrib/function-kcl Docker tag to v0.12.0

Author: renovate[bot]

example/resource-import/functions.yaml

@@ -14,7 +14,7 @@ kind: Function
 metadata:
   name: function-kcl
 spec:
-  package: xpkg.upbound.io/crossplane-contrib/function-kcl:v0.11.6
+  package: xpkg.upbound.io/crossplane-contrib/function-kcl:v0.12.0
 ---
 apiVersion: pkg.crossplane.io/v1beta1
 kind: Function