docs: bump cert manager version

Signed-off-by: Michael Beemer <beeme1mr@users.noreply.github.com>

Author: beeme1mr

docs/installation.md

@@ -7,7 +7,7 @@ The installation docs for cert manager can be found [here](https://cert-manager.
 Alternatively, running the commands below will install cert manager into the `cert-manager` namespace.
 
 ```sh
-kubectl apply -f https://github.com/cert-manager/cert-manager/releases/download/v1.13.2/cert-manager.yaml &&
+kubectl apply -f https://github.com/cert-manager/cert-manager/releases/download/v1.14.3/cert-manager.yaml &&
 kubectl wait --for=condition=Available=True deploy --all -n 'cert-manager'
 ```
 
@@ -94,4 +94,4 @@ kubectl delete namespace open-feature-operator-system
 
 ## What's next ?
 
-- Follow quick start guide to install custom resources and validate operator behavior: [Quick Start](./quick_start.md)
+- Follow quick start guide to install custom resources and validate operator behavior: [Quick Start](./quick_start.md)