Fix empty public key

CHANGELOG.md

@@ -6,6 +6,12 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 this package and not the cluster API. See the changelog of the [cluster API](https://cluster-api.cyberfusion.nl/redoc#section/Changelog) 
 for detailed information.
 
+## [1.85.1]
+
+### Fixed
+
+- Allow the public key to be null in `getPublicKey` method.
+
 ## [1.85.0]
 
 ### Removed

src/Client.php

@@ -20,7 +20,7 @@ class Client implements ClientContract
 {
     private const CONNECT_TIMEOUT = 60;
     private const TIMEOUT = 180;
-    private const VERSION = '1.85.0';
+    private const VERSION = '1.85.1';
     private const USER_AGENT = 'cyberfusion-cluster-api-client/' . self::VERSION;
 
     private Configuration $configuration;

src/Models/SshKey.php

@@ -35,7 +35,7 @@ public function setName(string $name): self
         return $this;
     }
 
-    public function getPublicKey(): string
+    public function getPublicKey(): ?string
     {
         return $this->publicKey;
     }