fix(gem) Fix dependencies.

Author: Hywan

.gitignore

@@ -1,3 +1,5 @@
+/.bundle
 /Gemfile.lock
 /pkg
-/target
+/target
+/vendor

wasmer.gemspec

@@ -23,7 +23,7 @@ Gem::Specification.new do |spec|
   spec.require_paths = %w(lib)
 
   spec.add_dependency "rutie", "~> 0.0.4"
-  spec.add_development_dependency "bundler", "~> 2.0"
-  spec.add_development_dependency "rake", "~> 10.0"
-  spec.add_development_dependency "minitest", "~> 5.0"
+  spec.add_development_dependency "bundler", "~> 2.1"
+  spec.add_development_dependency "rake", "~> 13.0"
+  spec.add_development_dependency "minitest", "~> 5.14"
 end