Upgrade API to use Quarkus 3.x and Java 17 as compilation target

src/main/java/org/eclipsefoundation/git/eca/api/models/CaptchaResponseData.java

@@ -13,7 +13,7 @@ package org.eclipsefoundation.git.eca.api.models;
 
 import java.util.List;
 
-import javax.annotation.Nullable;
+import jakarta.annotation.Nullable;
 
 import org.eclipsefoundation.git.eca.namespace.HCaptchaErrorCodes;