Update maven repo to jcenter.bintray.com
<repositories>
<repository>
- <id>Spring Plugins</id>
- <name>Spring Plugins</name>
- <url>https://repo.spring.io/plugins-release/</url>
+ <id>JCenter Bintray</id>
+ <name>JCenter Bintray</name>
+ <url>https://jcenter.bintray.com</url>
</repository>
</repositories>
