Remove rails binstub from built gems

The bin/rails script is solely used for local dev purposes.
Since the default bindir from Rubygems is bin the binstub
gets installed with the gems. This can cause issues with
the rails command comming from rails itself.

Also removing the old script/rails files, which were excluded
to solve the same issue.

(cherry picked from commit dde8966)

admin/solidus_admin.gemspec

@@ -22,7 +22,7 @@ Gem::Specification.new do |s|
   s.metadata["changelog_uri"] = "https://github.com/solidusio/solidus/releases?q=%22solidus_admin%2Fv0%22&expanded=true"
 
   s.files = `git ls-files -z`.split("\x0").reject do |f|
-    f.match(%r{^(spec|script)/})
+    f.match(%r{^(spec|bin)/})
   end + ["app/assets/builds/solidus_admin/tailwind.css"]
 
   s.required_ruby_version = '>= 3.1.0'

api/solidus_api.gemspec

@@ -17,7 +17,7 @@ Gem::Specification.new do |s|
   s.metadata['rubygems_mfa_required'] = 'true'
 
   s.files = `git ls-files -z`.split("\x0").reject do |f|
-    f.match(%r{^(spec|script)/})
+    f.match(%r{^(spec|bin)/})
   end
 
   s.required_ruby_version = '>= 3.1.0'

backend/solidus_backend.gemspec

@@ -17,7 +17,7 @@ Gem::Specification.new do |s|
   s.metadata['rubygems_mfa_required'] = 'true'
 
   s.files = `git ls-files -z`.split("\x0").reject do |f|
-    f.match(%r{^(spec|script)/})
+    f.match(%r{^(spec|bin)/})
   end
 
   s.required_ruby_version = '>= 3.1.0'

core/solidus_core.gemspec

@@ -17,7 +17,7 @@ Gem::Specification.new do |s|
   s.metadata['rubygems_mfa_required'] = 'true'
 
   s.files = `git ls-files -z`.split("\x0").reject do |f|
-    f.match(%r{^(spec|script)/})
+    f.match(%r{^(spec|bin)/})
   end
 
   s.required_ruby_version = '>= 3.1.0'

legacy_promotions/solidus_legacy_promotions.gemspec

@@ -17,7 +17,7 @@ Gem::Specification.new do |s|
   s.metadata['rubygems_mfa_required'] = 'true'
 
   s.files = `git ls-files -z`.split("\x0").reject do |f|
-    f.match(%r{^(spec|script)/})
+    f.match(%r{^(spec|bin)/})
   end
 
   s.required_ruby_version = '>= 3.1.0'

promotions/solidus_promotions.gemspec

@@ -17,12 +17,12 @@ Gem::Specification.new do |spec|
 
   spec.metadata["homepage_uri"] = spec.homepage
 
-  spec.required_ruby_version = ">= 3.0.0"
+  spec.required_ruby_version = ">= 3.1.0"
 
   # 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.
   files = Dir.chdir(__dir__) { `git ls-files -z`.split("\x0") }
-  spec.files = files.grep_v(%r{^(test|spec|features)/})
+  spec.files = files.grep_v(%r{^(spec|bin)/})
 
   spec.add_dependency "importmap-rails", "~> 1.2"
   spec.add_dependency "ransack-enum", "~> 1.0"