Add support for Ruby 3.4 (#39)

* Add support for Ruby 3.4
* Disable Gemspec/RequireMFA cop

Author: n-rodriguez

.github/workflows/ci.yml

@@ -23,6 +23,7 @@ jobs:
           - ruby-3.1
           - ruby-3.2
           - ruby-3.3
+          - ruby-3.4
           - ruby-head
     steps:
       - uses: actions/checkout@v4

.rubocop.yml

@@ -8,6 +8,13 @@ AllCops:
   DisplayCopNames: true
   NewCops: enable
 
+#
+# Gemspec
+#
+
+Gemspec/RequireMFA:
+  Enabled: false
+
 #
 # Metrics
 #