Update xpkg.upbound.io/upbound/function-approve Docker tag to v0.2.0

Author: renovate[bot]

example/functions.yaml

@@ -6,7 +6,7 @@ metadata:
   annotations:
     render.crossplane.io/runtime: Development
 spec:
-  package: xpkg.upbound.io/upbound/function-approve:v0.1.0
+  package: xpkg.upbound.io/upbound/function-approve:v0.2.0
 ---
 apiVersion: pkg.crossplane.io/v1beta1
 kind: Function