build: Preparing release v0.16.3

Author: codablock

config/manager/kustomization.yaml

@@ -5,4 +5,4 @@ resources:
 images:
   - name: ghcr.io/kluctl/flux-kluctl-controller
     newName: ghcr.io/kluctl/flux-kluctl-controller
-    newTag: v0.16.2
+    newTag: v0.16.3

docs/install.md

@@ -22,7 +22,7 @@ The Flux Kluctl Controller can currently be either installed via Kustomize or vi
 You can install the Flux Kluctl Controller by running the following command:
 
 ```sh
-kustomize build "https://github.com/kluctl/flux-kluctl-controller/config/install?ref=v0.16.2" | kubectl apply -f-
+kustomize build "https://github.com/kluctl/flux-kluctl-controller/config/install?ref=v0.16.3" | kubectl apply -f-
 ```
 
 ## Helm