fix(deps): update casclientversion to v3.6.4

Author: renovate[bot]

gradle.properties

@@ -42,7 +42,7 @@ antVersion=1.10.15
 awsVersion=1.12.782
 apereoPortletUtilsVersion=1.1.3
 aspectjVersion=1.9.22.1
-casClientVersion=3.6.2
+casClientVersion=3.6.4
 ccppVersion=1.0
 bouncyVersion=1.70
 cernunnosVersion=1.4.0