update dependency version constraints so CI errors out for a more cle…

…ar reason

savon.gemspec

@@ -17,19 +17,19 @@ Gem::Specification.new do |s|
   s.license = 'MIT'
 
   s.add_dependency "nori",     "~> 2.4"
-  s.add_dependency "faraday",  ">= 2.8"
-  s.add_dependency "faraday-gzip",  ">= 2.0"
-  s.add_dependency "faraday-digestauth",  ">= 0.2"
-  s.add_dependency "faraday-net_http_persistent",  ">= 2.1"
-  s.add_dependency "faraday-follow_redirects",  ">= 0.3"
-  s.add_dependency "rubyntlm",  ">= 0.6"
-  s.add_dependency "wasabi",   ">= 3.7"
+  s.add_dependency "faraday",  "~> 2.8"
+  s.add_dependency "faraday-gzip",  "~> 2.0"
+  s.add_dependency "faraday-follow_redirects",  "~> 0.3"
+  s.add_dependency "wasabi",   "~> 5.0"
   s.add_dependency "akami",    "~> 1.2"
   s.add_dependency "gyoku",    "~> 1.2"
   s.add_dependency "builder",  ">= 2.1.2"
   s.add_dependency "nokogiri", ">= 1.8.1"
   s.add_dependency "mail",     "~> 2.5"
 
+  s.add_development_dependency "faraday-digestauth",  "~> 0.4"
+  s.add_development_dependency "faraday-net_http_persistent",  "~> 2.1"
+  s.add_development_dependency "rubyntlm",  ">= 0.6"
   s.add_development_dependency "rack", " < 4"
   s.add_development_dependency "puma",  ">= 4.3.8", "< 7"