updated versions for common and jaxrs libraries

Author: Justin Richer

pom.xml

@@ -12,8 +12,8 @@
  <properties>
  <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 
- <authlete.java.common.version>2.17</authlete.java.common.version>
- <authlete.java.jaxrs.version>2.8-SNAPSHOT</authlete.java.jaxrs.version>
+ <authlete.java.common.version>2.18</authlete.java.common.version>
+ <authlete.java.jaxrs.version>2.8</authlete.java.jaxrs.version>
  <javax.servlet-api.version>3.0.1</javax.servlet-api.version>
  <jersey.version>2.22.1</jersey.version>
  <jetty.version>9.3.7.v20160115</jetty.version>