update swagger core and parser versions

Author: frantuma

pom.xml

@@ -253,8 +253,8 @@
     </dependencies>
     <properties>
         <swagger-codegen-version>3.0.26-SNAPSHOT</swagger-codegen-version>
-        <swagger-parser-version>2.0.23</swagger-parser-version>
-        <swagger-core-version>2.1.4</swagger-core-version>
+        <swagger-parser-version>2.0.26</swagger-parser-version>
+        <swagger-core-version>2.1.9</swagger-core-version>
         <jackson-version>2.11.4</jackson-version>
         <scala-version>2.11.1</scala-version>
         <felix-version>3.3.0</felix-version>