Update PrettyTime to 5.0.8

This version contains a fix for Ukrainian locale which fixes #11092.

Author: moontoaster

app/build.gradle

@@ -282,7 +282,7 @@ dependencies {
     implementation "com.jakewharton.rxbinding4:rxbinding:4.0.0"
 
     // Date and time formatting
-    implementation "org.ocpsoft.prettytime:prettytime:5.0.7.Final"
+    implementation "org.ocpsoft.prettytime:prettytime:5.0.8.Final"
 
 /** Debugging **/
     // Memory leak detection