Update bundled gems list at bb97061 [ci skip]

Author: matzbot

NEWS.md

@@ -99,7 +99,7 @@ The following bundled gems are updated.
 * net-ftp 0.3.7
 * net-imap 0.4.16
 * net-smtp 0.5.0
-* rbs 3.5.3
+* rbs 3.6.0
 * typeprof 0.21.11
 * debug 1.9.2
 * racc 1.8.1