bump core version 2.1.2

Author: gracekarina

pom.xml

@@ -288,7 +288,7 @@
         <swagger-parser-v2-version>1.0.51-SNAPSHOT</swagger-parser-v2-version>
         <commons-io-version>2.6</commons-io-version>
         <slf4j-version>1.7.30</slf4j-version>
-        <swagger-core-version>2.1.1</swagger-core-version>
+        <swagger-core-version>2.1.2</swagger-core-version>
         <junit-version>4.13</junit-version>
         <testng-version>6.14.2</testng-version>
         <jmockit-version>1.35</jmockit-version>