fix(specs): make optional for tasks [skip-bc] (generated)

algolia/api-clients-automation#4095

Co-authored-by: algolia-bot <[email protected]>
Co-authored-by: Clément Vannicatte <[email protected]>

Author: algolia-bot

algoliasearch/src/main/java/com/algolia/model/ingestion/Task.java

@@ -157,7 +157,7 @@ public Task setAction(ActionType action) {
   }
 
   /** Get action */
-  @javax.annotation.Nonnull
+  @javax.annotation.Nullable
   public ActionType getAction() {
     return action;
   }

algoliasearch/src/main/java/com/algolia/model/ingestion/TaskV1.java

@@ -134,7 +134,7 @@ public TaskV1 setAction(ActionType action) {
   }
 
   /** Get action */
-  @javax.annotation.Nonnull
+  @javax.annotation.Nullable
   public ActionType getAction() {
     return action;
   }