Bump RDoc to 7.0.2 (ruby#15691)

Author: st0012

NEWS.md

@@ -286,7 +286,7 @@ The following bundled gems are promoted from default gems.
 * pstore 0.2.0
 * benchmark 0.5.0
 * logger 1.7.0
-* rdoc 7.0.1
+* rdoc 7.0.2
 * win32ole 1.9.2
 * irb 1.16.0
 * reline 0.6.3

gems/bundled_gems

@@ -39,7 +39,7 @@ ostruct             0.6.3   https://github.com/ruby/ostruct
 pstore              0.2.0   https://github.com/ruby/pstore
 benchmark           0.5.0   https://github.com/ruby/benchmark
 logger              1.7.0   https://github.com/ruby/logger
-rdoc                7.0.1   https://github.com/ruby/rdoc
+rdoc                7.0.2   https://github.com/ruby/rdoc
 win32ole            1.9.2   https://github.com/ruby/win32ole
 irb                 1.16.0  https://github.com/ruby/irb
 reline              0.6.3   https://github.com/ruby/reline