Update gemspec

.github/workflows/main.yml

@@ -14,8 +14,8 @@ jobs:
     strategy:
       matrix:
         ruby:
-          - '3.0'
           - '3.1'
+          - '3.2'
 
     steps:
     - uses: actions/checkout@v3

rubrik.gemspec

@@ -9,22 +9,18 @@ Gem::Specification.new do |spec|
   spec.email = ["tomascoelho6@gmail.com"]
 
   spec.summary = "Sign PDFs digitally in pure Ruby"
-  spec.description = "This gem is capable of modifying PDFs to add "
+  spec.description = "Sign PDFs digitally in pure Ruby"
   spec.homepage = "https://github.com/tomascco/rubrik"
   spec.license = "MIT"
-  spec.required_ruby_version = ">= 3.0.0"
+  spec.required_ruby_version = ">= 3.1.0"
 
   spec.metadata["homepage_uri"] = spec.homepage
   spec.metadata["source_code_uri"] = "https://github.com/tomascco/rubrik"
   spec.metadata["changelog_uri"] = "https://github.com/tomascco/rubrik/blob/main/CHANGELOG.md"
 
   # Specify which files should be added to the gem when it is released.
   # The `git ls-files -z` loads the files in the RubyGem that have been added into git.
-  spec.files = Dir.chdir(__dir__) do
-    `git ls-files -z`.split("\x0").reject do |f|
-      (f == __FILE__) || f.match(%r{\A(?:(?:bin|test|spec|features)/|\.(?:git|travis|circleci)|appveyor)})
-    end
-  end
+  spec.files = Dir.glob("lib/**/*.rb") + ["README.md", "LICENSE.txt"]
   spec.bindir = "exe"
   spec.executables = spec.files.grep(%r{\Aexe/}) { |f| File.basename(f) }
   spec.require_paths = ["lib"]