Revert "Allow ruby_smb 2.x and 3.x"

This reverts commit 460e413.

the CI passed in #41.
but the CI was flawed and the related winrm_transport check wasn't
triggered, because it only runs when specific files changed.

Author: bastelfreak

openbolt.gemspec

@@ -61,7 +61,7 @@ Gem::Specification.new do |spec|
   spec.add_dependency "puppetfile-resolver", ">= 0.6.2", "< 1.0"
   spec.add_dependency "puppet-resource_api", ">= 1.8.1"
   spec.add_dependency "r10k", ">= 3.10", "< 5"
-  spec.add_dependency "ruby_smb", ">= 1.0", "< 4.0.0"
+  spec.add_dependency "ruby_smb", "~> 1.0"
   spec.add_dependency "terminal-table", "~> 3.0"
   spec.add_dependency "winrm", "~> 2.0"
   spec.add_dependency "winrm-fs", "~> 1.3"