Fix dependency versioning

Gemfile.lock

@@ -2,12 +2,12 @@ PATH
   remote: .
   specs:
     scaltainer (0.6.0)
-      docker-api
-      dotenv
-      excon (>= 0.47.0)
-      kubeclient
-      newrelic_rpm
-      prometheus-client
+      docker-api (~> 2.1)
+      dotenv (~> 2.7)
+      excon (~> 0.47)
+      kubeclient (~> 4.9)
+      newrelic_rpm (~> 7.1)
+      prometheus-client (~> 2.1)
 
 GEM
   remote: https://rubygems.org/
@@ -91,13 +91,13 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  bundler (>= 2.2.10)
+  bundler (~> 2.2)
   coderay (~> 1.1)
-  rake (>= 12.3.3)
+  rake (~> 13.0)
   rspec (~> 3.5)
   scaltainer!
-  simplecov (~> 0.17.1)
-  simplecov-lcov (~> 0.7.0)
+  simplecov (~> 0.17)
+  simplecov-lcov (~> 0.7)
 
 BUNDLED WITH
    2.2.19

scaltainer.gemspec

@@ -22,17 +22,17 @@ Gem::Specification.new do |spec|
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ["lib"]
 
-  spec.add_development_dependency "bundler", ">= 2.2.10"
-  spec.add_development_dependency "rake", ">= 12.3.3"
-  spec.add_development_dependency 'rspec', '~> 3.5'
-  spec.add_development_dependency 'coderay', '~> 1.1'
-  spec.add_development_dependency 'simplecov', '~> 0.17.1'
-  spec.add_development_dependency 'simplecov-lcov', '~> 0.7.0'
+  spec.add_development_dependency "bundler", "~> 2.2"
+  spec.add_development_dependency "rake", "~> 13.0"
+  spec.add_development_dependency "rspec", "~> 3.5"
+  spec.add_development_dependency "coderay", "~> 1.1"
+  spec.add_development_dependency "simplecov", "~> 0.17"
+  spec.add_development_dependency "simplecov-lcov", "~> 0.7"
 
-  spec.add_runtime_dependency 'excon', '>= 0.47.0'
-  spec.add_runtime_dependency "docker-api"
-  spec.add_runtime_dependency "kubeclient"
-  spec.add_runtime_dependency "dotenv"
-  spec.add_runtime_dependency "prometheus-client"
-  spec.add_runtime_dependency "newrelic_rpm"
+  spec.add_runtime_dependency "excon", "~> 0.47"
+  spec.add_runtime_dependency "docker-api", "~> 2.1"
+  spec.add_runtime_dependency "kubeclient", "~> 4.9"
+  spec.add_runtime_dependency "dotenv", "~> 2.7"
+  spec.add_runtime_dependency "prometheus-client", "~> 2.1"
+  spec.add_runtime_dependency "newrelic_rpm", "~> 7.1"
 end