chore: bump jaxb-api from 2.2 to 2.3.1 (twilio#536)

Bumps [jaxb-api](https://github.com/javaee/jaxb-spec) from 2.2 to 2.3.1.
- [Release notes](https://github.com/javaee/jaxb-spec/releases)
- [Commits](https://github.com/javaee/jaxb-spec/commits/2.3.1)

pom.xml

@@ -202,7 +202,7 @@
     <dependency>
       <groupId>javax.xml.bind</groupId>
       <artifactId>jaxb-api</artifactId>
-      <version>2.2</version>
+      <version>2.3.1</version>
     </dependency>
     <dependency>
       <groupId>org.jmockit</groupId>