fix: fix 3.1 schema deserialization

Author: frantuma

modules/swagger-core/src/main/java/io/swagger/v3/core/util/ModelDeserializer.java

@@ -152,8 +152,12 @@ private Schema deserializeJsonSchema(JsonNode node) {
             }
             if (additionalProperties != null) {
                 try {
-                    Schema innerSchema = Json31.mapper().convertValue(additionalProperties, JsonSchema.class);
-                    schema.setAdditionalProperties(innerSchema);
+                    if (additionalProperties.isBoolean()) {
+                        schema.setAdditionalProperties(additionalProperties.booleanValue());
+                    } else {
+                        Schema innerSchema = deserializeJsonSchema(additionalProperties);
+                        schema.setAdditionalProperties(innerSchema);
+                    }
                 } catch (Exception e) {
                     Boolean additionalPropsBoolean = Json31.mapper().convertValue(additionalProperties, Boolean.class);
                     schema.setAdditionalProperties(additionalPropsBoolean);

modules/swagger-models/src/main/java/io/swagger/v3/oas/models/links/LinkParameter.java

@@ -7,7 +7,6 @@
 /**
  * LinkParameter
  *
- * @see "https://github.com/OAI/OpenAPI-Specification/blob/3.0.1/versions/3.0.1.md#linkOParametersbject"
  */
 
 public class LinkParameter {

modules/swagger-models/src/main/java/io/swagger/v3/oas/models/media/Schema.java

@@ -1,7 +1,6 @@
 package io.swagger.v3.oas.models.media;
 
 import com.fasterxml.jackson.annotation.JsonIgnore;
-import com.sun.org.apache.xpath.internal.operations.Bool;
 import io.swagger.v3.oas.models.annotations.OpenAPI30;
 import io.swagger.v3.oas.models.annotations.OpenAPI31;
 import io.swagger.v3.oas.models.Components;
@@ -49,6 +48,7 @@ public class Schema<T> {
     private Integer maxProperties = null;
     private Integer minProperties = null;
     private List<String> required = null;
+    @OpenAPI30
     private String type = null;
     private Schema not = null;
     private Map<String, Schema> properties = null;