Fix test error

Gemfile

@@ -5,9 +5,10 @@ gem 'bootsnap', '~> 1.11.0', require: false
 gem 'figaro', '~> 1.2.0'
 gem 'jbuilder'
 gem 'mimemagic', '~> 0.4.3'
-gem 'net-smtp'
-gem 'net-imap'
-gem 'net-pop'
+gem 'net-http', require: false
+gem 'net-smtp', '~> 0.1.0', require: false
+gem 'net-imap', require: false
+gem 'net-pop', require: false
 gem 'pg', '~> 1.3.0'
 gem 'rails', '>= 6.0.3.1'
 gem 'recaptcha', '~> 5.8', require: 'recaptcha/rails'

Gemfile.lock

@@ -137,6 +137,9 @@ GEM
     mini_portile2 (2.6.1)
     minitest (5.14.4)
     msgpack (1.5.1)
+    net-http (0.2.0)
+      net-protocol
+      uri
     net-imap (0.2.3)
       digest
       net-protocol
@@ -147,10 +150,7 @@ GEM
       timeout
     net-protocol (0.1.3)
       timeout
-    net-smtp (0.3.1)
-      digest
-      net-protocol
-      timeout
+    net-smtp (0.1.0)
     nio4r (2.5.8)
     nokogiri (1.12.5)
       mini_portile2 (~> 2.6.1)
@@ -245,6 +245,7 @@ GEM
     unicorn (6.0.0)
       kgio (~> 2.6)
       raindrops (~> 0.7)
+    uri (0.11.0)
     webmock (3.14.0)
       addressable (>= 2.8.0)
       crack (>= 0.3.2)
@@ -269,9 +270,10 @@ DEPENDENCIES
   listen (>= 3.0.5, < 3.8)
   mimemagic (~> 0.4.3)
   mina (~> 1.2.4)
+  net-http
   net-imap
   net-pop
-  net-smtp
+  net-smtp (~> 0.1.0)
   passenger (>= 5.3.2)
   pg (~> 1.3.0)
   pry

app/mailers/contact_request_mailer.rb

@@ -14,7 +14,7 @@ def confirmation_email(contact_request)
   end
 
   def contact_email(contact_request:, recipients:, mail_body:, raise_error: false)
-    raise ::Net::SMTPFatalError if Rails.env.test? && raise_error
+    raise Net::SMTPFatalError if Rails.env.test? && raise_error
 
     if ApplicationMailer.ses_configured?
       ses_contact_email(