[rubygems/rubygems] Deprecate typo name

https://github.com/rubygems/rubygems/commit/62d54cbf08
2021-11-29 19:00:15 +09:00 · 2021-11-29 19:00:15 +09:00 · 659c864a43
--- a/lib/rubygems/exceptions.rb
+++ b/lib/rubygems/exceptions.rb
@ -284,3 +284,4 @@ end
 # Backwards compatible typo'd exception class for early RubyGems 2.0.x

 Gem::UnsatisfiableDepedencyError = Gem::UnsatisfiableDependencyError # :nodoc:
+Gem.deprecate_constant :UnsatisfiableDepedencyError