Refactor gemspec and reduce min. Ruby version

This refactors the `terta.gemspec` file to modernize it. Furthermore,
the  minimum Ruby version is 3.2 instead of 3.4.

Author: nodeg

.rubocop.yml

@@ -7,7 +7,7 @@ plugins:
 
 AllCops:
   NewCops: enable
-  TargetRubyVersion: 3.4
+  TargetRubyVersion: 3.2
   Exclude:
     - "lib/template/*.spec"
     - "vendor/**/*"

Gemfile.lock

@@ -3,7 +3,6 @@ PATH
   specs:
     tetra (2.0.8)
       clamp (~> 1.3.2)
-      erb (~> 6.0)
       json_pure (>= 2.6.3, < 2.9.0)
       rexml (>= 3.2.9, < 3.5.0)
       rubyzip (~> 3.2)
@@ -51,7 +50,6 @@ GEM
     cucumber-tag-expressions (8.1.0)
     diff-lcs (1.6.2)
     docile (1.4.1)
-    erb (6.0.1)
     ffi (1.17.3)
     ffi (1.17.3-aarch64-linux-gnu)
     ffi (1.17.3-aarch64-linux-musl)
@@ -181,7 +179,6 @@ CHECKSUMS
   cucumber-tag-expressions (8.1.0) sha256=9bd8c4b6654f8e5bf2a9c99329b6f32136a75e50cd39d4cfb3927d0fa9f52e21
   diff-lcs (1.6.2) sha256=9ae0d2cba7d4df3075fe8cd8602a8604993efc0dfa934cff568969efb1909962
   docile (1.4.1) sha256=96159be799bfa73cdb721b840e9802126e4e03dfc26863db73647204c727f21e
-  erb (6.0.1) sha256=28ecdd99c5472aebd5674d6061e3c6b0a45c049578b071e5a52c2a7f13c197e5
   ffi (1.17.3) sha256=0e9f39f7bb3934f77ad6feab49662be77e87eedcdeb2a3f5c0234c2938563d4c
   ffi (1.17.3-aarch64-linux-gnu) sha256=28ad573df26560f0aedd8a90c3371279a0b2bd0b4e834b16a2baa10bd7a97068
   ffi (1.17.3-aarch64-linux-musl) sha256=020b33b76775b1abacc3b7d86b287cef3251f66d747092deec592c7f5df764b2

tetra.gemspec

@@ -1,50 +1,57 @@
 # frozen_string_literal: true
 
-$LOAD_PATH.unshift(File.join(__dir__, "lib"))
-require "tetra/version"
+require_relative "lib/tetra/version"
 
-Gem::Specification.new do |s|
-  s.name        = "tetra"
-  s.version     = Tetra::VERSION
-  s.authors     = ["Dominik Gedon", "Silvio Moioli"]
-  s.email       = "dgedon@suse.de"
-  s.homepage    = "https://github.com/uyuni-project/tetra"
-  s.summary     = "A tool to package Java projects"
-  s.description = <<~TEXT
+Gem::Specification.new do |spec|
+  spec.name        = "tetra"
+  spec.version     = Tetra::VERSION
+  spec.authors     = ["Dominik Gedon", "Silvio Moioli"]
+  spec.email       = ["dominik.gedon@suse.com"]
+  spec.homepage    = "https://github.com/uyuni-project/tetra"
+  spec.summary     = "A tool to package Java projects"
+  spec.description = <<~TEXT
     Tetra simplifies the creation of spec files and archives
-    to distribute Java projects in RPM format
+    to distribute Java projects in RPM format.
   TEXT
 
-  s.license     = "MIT"
-  s.metadata    = {
+  spec.license = "MIT"
+  spec.metadata = {
     "bug_tracker_uri" => "https://github.com/uyuni-project/tetra/issues",
-    "homepage_uri" => s.homepage,
+    "homepage_uri" => spec.homepage,
     "source_code_uri" => "https://github.com/uyuni-project/tetra",
-    "rubygems_mfa_required" => "true"
+    "rubygems_mfa_required" => "true",
+    "allowed_push_host" => "https://rubygems.org"
   }
 
-  s.files = `git ls-files`.split("\n")
-  s.test_files = `git ls-files -- {test,spec,features}/*`.split("\n")
-  s.executables = `git ls-files -- bin/*`.split("\n").map { |f| File.basename(f) }
-  s.require_paths = ["lib"]
-  s.rdoc_options << "--exclude=lib/template/bundled"
+  spec.required_ruby_version = ">= 3.2"
+  spec.files = Dir.glob(
+    [
+      "bin/*",
+      "lib/**/*",
+      "*.md",
+      "LICENSE",
+      "COPYING"
+    ]
+  ).select { |f| File.file?(f) }
 
-  s.required_ruby_version = ">= 3.4.0"
+  spec.executables = spec.files.grep(%r{\Abin/}) { |f| File.basename(f) }
+  spec.require_paths = ["lib"]
+  spec.rdoc_options << "--exclude=lib/template/bundled"
 
-  s.add_development_dependency "aruba", "~> 2.3"
-  s.add_development_dependency "rake", "~> 13.3"
-  s.add_development_dependency "rspec", "~> 3.13"
-  s.add_development_dependency "rubocop", "~> 1.82.1"
-  s.add_development_dependency "rubocop-performance", "~> 1.26"
-  s.add_development_dependency "rubocop-rake", "~> 0.7.1"
-  s.add_development_dependency "rubocop-rspec", "~> 3.9.0"
-  s.add_development_dependency "simplecov", "~> 0.22"
-  s.add_development_dependency "simplecov-cobertura", "~> 3.1"
+  # Dependencies
+  spec.add_runtime_dependency "clamp", "~> 1.3.2"
+  spec.add_runtime_dependency "json_pure", ">= 2.6.3", "< 2.9.0"
+  spec.add_runtime_dependency "rexml", ">= 3.2.9", "< 3.5.0"
+  spec.add_runtime_dependency "rubyzip", "~> 3.2"
+  spec.add_runtime_dependency "text", "~> 1.3.1"
 
-  s.add_runtime_dependency "clamp", "~> 1.3.2"
-  s.add_runtime_dependency "erb", "~> 6.0"
-  s.add_runtime_dependency "json_pure", ">= 2.6.3", "< 2.9.0"
-  s.add_runtime_dependency "rexml", ">= 3.2.9", "< 3.5.0"
-  s.add_runtime_dependency "rubyzip", "~> 3.2"
-  s.add_runtime_dependency "text", "~> 1.3.1"
+  spec.add_development_dependency "aruba", "~> 2.3"
+  spec.add_development_dependency "rake", "~> 13.3"
+  spec.add_development_dependency "rspec", "~> 3.13"
+  spec.add_development_dependency "rubocop", "~> 1.82.1"
+  spec.add_development_dependency "rubocop-performance", "~> 1.26"
+  spec.add_development_dependency "rubocop-rake", "~> 0.7.1"
+  spec.add_development_dependency "rubocop-rspec", "~> 3.9.0"
+  spec.add_development_dependency "simplecov", "~> 0.22"
+  spec.add_development_dependency "simplecov-cobertura", "~> 3.1"
 end