fix(deps): update dependency org.jasig.portal:uportal-soffit-renderer to v5.17.8

Author: renovate[bot]

gradle.properties

@@ -15,4 +15,4 @@ springVersion=5.0.7.RELEASE
 springDataJpaVersion=2.0.8.RELEASE
 springSecurityVersion=5.0.6.RELEASE
 springfoxVersion=2.8.0
-uPortalVersion=5.2.0
+uPortalVersion=5.17.8