Bump shiro.version from 1.4.0 to 1.6.0 in /renren-fast

Bumps `shiro.version` from 1.4.0 to 1.6.0.

Updates `shiro-core` from 1.4.0 to 1.6.0
- [Release notes](https://github.com/apache/shiro/releases)
- [Changelog](https://github.com/apache/shiro/blob/master/RELEASE-NOTES)
- [Commits](apache/shiro@shiro-root-1.4.0...shiro-root-1.6.0)

Updates `shiro-spring` from 1.4.0 to 1.6.0

Signed-off-by: dependabot[bot] <support@github.com>

renren-fast/pom.xml

@@ -29,7 +29,7 @@
 		<commons.io.version>2.5</commons.io.version>
 		<commons.codec.version>1.10</commons.codec.version>
 		<commons.configuration.version>1.10</commons.configuration.version>
-		<shiro.version>1.4.0</shiro.version>
+		<shiro.version>1.6.0</shiro.version>
 		<jwt.version>0.7.0</jwt.version>
 		<kaptcha.version>0.0.9</kaptcha.version>
 		<qiniu.version>7.2.23</qiniu.version>