Allow ruby 4.0 (#38)

* Update ruby version

* update bundler version

Author: emfy0

.github/workflows/build.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        ruby: ['3.3', '3.4']
+        ruby: ['3.3', '3.4', '4.0']
     steps:
     - uses: actions/checkout@v6
     - uses: ruby/setup-ruby@v1

.github/workflows/codecl.yml

@@ -36,7 +36,7 @@ jobs:
         uses: github/codeql-action/analyze@v4
       - uses: ruby/setup-ruby@v1
         with:
-          ruby-version: '3.4'
+          ruby-version: '4.0'
           bundler-cache: true
       - name: "Run rufo code formatting checks"
         run: |

keccak.gemspec

@@ -15,7 +15,7 @@ Gem::Specification.new do |spec|
   spec.email = "%w[ruby@q9f.cc]"
   spec.extensions << "ext/digest/extconf.rb"
   spec.platform = Gem::Platform::RUBY
-  spec.required_ruby_version = ">= 3.0", "< 4.0"
+  spec.required_ruby_version = ">= 3.0"
   spec.license = "Apache-2.0"
   spec.metadata = {
     "homepage_uri" => "https://github.com/q9f/keccak.rb",
@@ -34,6 +34,6 @@ Gem::Specification.new do |spec|
     "lib/**/*"
   ]
   spec.test_files = spec.files.grep %r{^(test|spec|features)/}
-  spec.add_development_dependency "bundler", "~> 2.4"
+  spec.add_development_dependency "bundler", ">= 2.4"
   spec.add_development_dependency "test-unit", "~> 3.6"
 end

lib/digest/keccak/version.rb

@@ -2,6 +2,6 @@
 
 module Digest
   class Keccak
-    VERSION = "1.3.3"
+    VERSION = "1.3.4"
   end
 end