Bump rdoc from 6.16.1 to 6.17.0

Bumps [rdoc](https://github.com/ruby/rdoc) from 6.16.1 to 6.17.0.
- [Release notes](https://github.com/ruby/rdoc/releases)
- [Changelog](https://github.com/ruby/rdoc/blob/master/History.rdoc)
- [Commits](https://github.com/ruby/rdoc/compare/v6.16.1...v6.17.0)

---
updated-dependencies:
- dependency-name: rdoc
  dependency-version: 6.17.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Gemfile

@@ -63,7 +63,7 @@ end
 group :test do
   gem 'test-unit-full', '~> 0.0.5'
   gem 'rspec', '~> 3.13'
-  gem 'rdoc', '~> 6.16'
+  gem 'rdoc', '~> 6.17'
   gem 'browserstack-local', '~> 1.4'
 
   gem 'irb', '~> 1.15'

Gemfile.lock

@@ -166,7 +166,7 @@ GEM
       rack (>= 1.3)
     rainbow (3.1.1)
     rake (13.3.1)
-    rdoc (6.16.1)
+    rdoc (6.17.0)
       erb
       psych (>= 4.0.0)
       tsort
@@ -237,7 +237,7 @@ GEM
     sqlite3 (2.8.1-x86_64-darwin)
     sqlite3 (2.8.1-x86_64-linux-gnu)
     sqlite3 (2.8.1-x86_64-linux-musl)
-    stringio (3.1.8)
+    stringio (3.1.9)
     sync (0.5.0)
     term-ansicolor (1.11.3)
       tins (~> 1)
@@ -325,7 +325,7 @@ DEPENDENCIES
   rack (~> 3.2)
   rack-protection (~> 4.2.1)
   rake (~> 13.3)
-  rdoc (~> 6.16)
+  rdoc (~> 6.17)
   rest-client (~> 2.1.0)
   rspec (~> 3.13)
   rubocop (~> 1.81.7)