fix PHP 8.4 compatibility problems

Signed-off-by: Maurice Preuß <envoyr@froxlor.org>

src/Databases.php

@@ -13,9 +13,9 @@ class Databases
 
     public function create(
         string $password,
-        string $description = null,
+        ?string $description = null,
         bool $mail = false,
-        string $suffix = null
+        ?string $suffix = null
     ): array {
         return $this->customer->server->request('Mysqls.add', [
             'customerid' => $this->customer->id,
@@ -32,4 +32,4 @@ class Databases
             'customerid' => $this->customer->id,
         ]);
     }
-}
+}

src/Emails.php

@@ -11,7 +11,7 @@ class Emails
         $this->customer = $customer;
     }
 
-    public function create(string $email_part, string $domain, string $description = null): array
+    public function create(string $email_part, string $domain, ?string $description = null): array
     {
         return $this->customer->server->request('Emails.add', [
             'customerid' => $this->customer->id,
@@ -27,4 +27,4 @@ class Emails
             'customerid' => $this->customer->id,
         ]);
     }
-}
+}

src/Ftps.php

@@ -11,7 +11,7 @@ class Ftps
         $this->customer = $customer;
     }
 
-    public function create(string $password, string $path = '/', string $description = null, bool $mail = false): array
+    public function create(string $password, string $path = '/', ?string $description = null, bool $mail = false): array
     {
         return $this->customer->server->request('Ftps.add', [
             'customerid' => $this->customer->id,
@@ -28,4 +28,4 @@ class Ftps
             'customerid' => $this->customer->id,
         ]);
     }
-}
+}