Update bundler requirement from ~> 1.16 to ~> 2.2

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Updates the requirements on bundler to permit the latest version.

Release notes

Sourced from bundler's releases.

bundler-v2.2.0

Enhancements:

• New gem template: prefer require_relative to require #4066
• Always show underlying error when fetching specs fails #4061
• Add --all-platforms flag to bundle binstubs to generate binstubs for all platforms #3886
• Improve gem not found in source error messages #4019
• Revert resolving all Gemfile platforms automatically #4052
• Remove extra empty line from README template #4041
• Lazily load erb #4011

Bug fixes:

• Fix Bundler::Plugin::API::Source#to_s having empty source type #4084
• Raise consistent errors with or without bundle exec #4063
• Fix edge case resulting in a crash when using zeitwerk inside a nested bundle exec invocation #4062
• Enable specific_platform by default #4015
• Prevent remove command from deleting gemfile lines that are comments #4045
• Fix issue with cache_all_platforms and specific_platform configured #4042
• Fix incorrect error message on Windows #4039
• Make printed drive letters consistent on Windows #4038
• Load rubygems plugins from RUBYLIB during bundle install and bundle update #3534
• Fix specific_platform and cache_all with bundle cache --all-platforms #4022
• Bring back the possibility to install a plugin from path #4020
• Move ronn pages to lib #3997
• Fix fileutils double load when using bundler/inline #3991
• Accept responses with no etag header #3865

Documentation:

• Fix typo of bundle-install.1 (v2.1) #4079
• Add commented out example and more information link to generated gemspec #4034

2.2.0.rc.2 (October 6, 2020)

Minor enhancements:

• Fix ls-files matching regexp #3845
• Remove redundant bundler/setup require from spec_helper.rb generated by bundle gem #3791

Bug fixes:

• Deduplicate spec groups #3965
• Fix some cases of running bundler on a path including brackets #3854
• Don't warn when deinit'ing submodules #3969
• Make bundle clean --force leave default gem executables untouched #3907
• Prioritize path.system over path when it makes sense #3933
• Sort requirements in Gem::Requirement to succeed comparison with different order #3889
• Print bug report template to standard error #3924
• Restore bundle cache --all in all cases #3914

Changelog

Sourced from bundler's changelog.

2.2.0 (December 7, 2020)

Enhancements:

• New gem template: prefer require_relative to require #4066
• Always show underlying error when fetching specs fails #4061
• Add --all-platforms flag to bundle binstubs to generate binstubs for all platforms #3886
• Improve gem not found in source error messages #4019
• Revert resolving all Gemfile platforms automatically #4052
• Remove extra empty line from README template #4041
• Lazily load erb #4011

Bug fixes:

• Fix Bundler::Plugin::API::Source#to_s having empty source type #4084
• Raise consistent errors with or without bundle exec #4063
• Fix edge case resulting in a crash when using zeitwerk inside a nested bundle exec invocation #4062
• Enable specific_platform by default #4015
• Prevent remove command from deleting gemfile lines that are comments #4045
• Fix issue with cache_all_platforms and specific_platform configured #4042
• Fix incorrect error message on Windows #4039
• Make printed drive letters consistent on Windows #4038
• Load rubygems plugins from RUBYLIB during bundle install and bundle update #3534
• Fix specific_platform and cache_all with bundle cache --all-platforms #4022
• Bring back the possibility to install a plugin from path #4020
• Move ronn pages to lib #3997
• Fix fileutils double load when using bundler/inline #3991
• Accept responses with no etag header #3865

Documentation:

• Fix typo of bundle-install.1 (v2.1) #4079
• Add commented out example and more information link to generated gemspec #4034

2.2.0.rc.2 (October 6, 2020)

Features:

• Add bundle fund command #3390

Enhancements:

• Fix ls-files matching regexp #3845
• Remove redundant bundler/setup require from spec_helper.rb generated by bundle gem #3791

Bug fixes:

• Deduplicate spec groups #3965
• Fix some cases of running bundler on a path including brackets #3854
• Don't warn when deinit'ing submodules #3969

Commits

• d3628e5 Merge pull request #4104 from rubygems/release/bundler_2.2.0_rubygems_3.2.0
• 978ecd3 Merge pull request #4105 from sonalkr132/revert-globalsign
• 6cacdb9 Rubygems version 3.2.0 with changelog
• d20e200 Bundler version 2.2.0 with changelog
• b02a940 Merge pull request #4106 from rubygems/fix_test_failure_when_version_is_exact...
• ee10fd6 Merge pull request #4075 from eregon/no-kernel-warn-monkey-patch
• aefb9de Merge pull request #4096 from rubygems/delay_deprecation
• 22ea6f5 Merge pull request #4100 from sonalkr132/update-certs
• 4c03023 Merge pull request #4065 from rubygems/rootless_container
• ebe55bd Merge pull request #4084 from ayanko/bugfix-plugin-source-api-to-s
• Additional commits viewable in compare view

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