dependencies updated.

Author: syslogic

build.gradle

@@ -6,13 +6,13 @@ buildscript {
         material_version = '1.9.0'
         appcompat_version = '1.6.1'
         annotation_version = '1.6.0'
-        fragment_version = '1.6.0'
+        fragment_version = '1.6.1'
         nav_version = '2.6.0'
         room_version = '2.5.2'
         flexbox_version = '3.0.0'
         splash_version = '1.0.1'
-        recyclerview_version = '1.3.0'
-        preference_version = '1.2.0'
+        recyclerview_version = '1.3.1'
+        preference_version = '1.2.1'
         cardview_version = '1.0.0'
         retrofit_version = '2.9.0'
         gson_version = '2.10.1'