Merge branch 'sh-fix-bundler-checksum-rubygems-3.5.6' into 'master'

Make bundler-checksum work with RubyGems 3.5.6

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/144985



Merged-by: Rémy Coutable <remy@rymai.me>
Approved-by: Rémy Coutable <remy@rymai.me>
Co-authored-by: Stan Hu <stanhu@gmail.com>

vendor/gems/bundler-checksum/lib/bundler_checksum/command/init.rb

@@ -12,7 +12,10 @@ def execute
       checksums = []
 
       require "bundler/vendored_uri"
-      args = [nil, Bundler::Source::Rubygems::Remote.new(Bundler::URI("https://rubygems.org")), nil]
+      # RubyGems v3.5.6 got rid of Bundler::URI in favor of a vendored Gem::URI: https://github.com/rubygems/rubygems/pull/7386
+      rubygems_source = 'https://rubygems.org'
+      remote = defined?(Gem::URI) ? Gem::URI(rubygems_source) : Bundler::URI(rubygems_source)
+      args = [nil, Bundler::Source::Rubygems::Remote.new(remote), nil]
       # gem_remote_fetcher added in https://github.com/rubygems/rubygems/pull/7092/
       args << nil if Gem::Version.new(Bundler::VERSION) >= Gem::Version.new("2.5.0")