nvchecker: add ruby dependencies

* ruby-tty-platform
* ruby-slow_enumerator_tools
* ruby-parallel
* ruby-json_schema
* ruby-hamster
* ruby-ref
* ruby-ddplugin
* ruby-ddmemoize
* ruby-ddmetrics

.repo/nvchecker.toml

@@ -724,6 +724,42 @@ use_max_tag = true
 
 # gems
 
+[ruby-tty-platform]
+source = "gems"
+gems = "tty-platform"
+
+[ruby-slow_enumerator_tools]
+source = "gems"
+gems = "slow_enumerator_tools"
+
+[ruby-parallel]
+source = "gems"
+gems = "parallel"
+
+[ruby-json_schema]
+source = "gems"
+gems = "json_schema"
+
+[ruby-hamster]
+source = "gems"
+gems = "hamster"
+
+[ruby-ref]
+source = "gems"
+gems = "ref"
+
+[ruby-ddplugin]
+source = "gems"
+gems = "ddplugin"
+
+[ruby-ddmemoize]
+source = "gems"
+gems = "ddmemoize"
+
+[ruby-ddmetrics]
+source = "gems"
+gems = "ddmetrics"
+
 [ruby-mdl]
 source = "gems"
 gems = "mdl"