chore: Suppress warnings about deprecation in library code

Author: JanEbbing

deepl-java/src/main/java/com/deepl/api/DeepLClient.java

@@ -37,6 +37,7 @@ public DeepLClient(String authKey) throws IllegalArgumentException {
    * @param options Additional options controlling Client behaviour.
    * @throws IllegalArgumentException If authKey is invalid.
    */
+  @SuppressWarnings("deprecation")
   public DeepLClient(String authKey, DeepLClientOptions options) throws IllegalArgumentException {
     super(authKey, options);
   }

deepl-java/src/main/java/com/deepl/api/DeepLClientOptions.java

@@ -4,4 +4,5 @@
 package com.deepl.api;
 
 /** {@inheritDoc} */
+@SuppressWarnings("deprecation")
 public class DeepLClientOptions extends TranslatorOptions {}