Update dependency importmap-rails to v2

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
importmap-rails	1.2.3 -> 2.0.1

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Release Notes

rails/importmap-rails (importmap-rails)

### [`v2.0.1`](https://togithub.com/rails/importmap-rails/releases/tag/v2.0.1) [Compare Source](https://togithub.com/rails/importmap-rails/compare/v2.0.0...v2.0.1) #### What's Changed - Ensure update only runs when there are outdated packages by [@​dhh](https://togithub.com/dhh) **Full Changelog**: https://github.com/rails/importmap-rails/compare/v2.0.0...v2.0.1 ### [`v2.0.0`](https://togithub.com/rails/importmap-rails/releases/tag/v2.0.0) [Compare Source](https://togithub.com/rails/importmap-rails/compare/v1.2.3...v2.0.0) #### What's Changed This major release includes two potentially backwards-incompatible changes: - The compatibility shim is no longer included, since [all major browsers now natively support import maps](https://caniuse.com/import-maps). But if you need to support old browsers, like Safari 15, Firefox 75, Chrome 88, you should continue using the 1.x series of this gem. - Preloading is now the default. So if you have pins that you intend to lazy load, you need to specifically call `preload: false` as part of the pin. All changes: - Drop the bundled shim by [@​dhh](https://togithub.com/dhh) in [https://github.com/rails/importmap-rails/pull/216](https://togithub.com/rails/importmap-rails/pull/216) - Pinning should just always download by [@​dhh](https://togithub.com/dhh) in [https://github.com/rails/importmap-rails/pull/217](https://togithub.com/rails/importmap-rails/pull/217) - Preload all by default by [@​dhh](https://togithub.com/dhh) in [https://github.com/rails/importmap-rails/pull/218](https://togithub.com/rails/importmap-rails/pull/218) - Update Impoortmaps::Command#puts_table to be markdown compatible by [@​faqndo97](https://togithub.com/faqndo97) in [https://github.com/rails/importmap-rails/pull/222](https://togithub.com/rails/importmap-rails/pull/222) - bin/importmap update by [@​botandrose](https://togithub.com/botandrose) in [https://github.com/rails/importmap-rails/pull/214](https://togithub.com/rails/importmap-rails/pull/214) **Full Changelog**: https://github.com/rails/importmap-rails/compare/v1.2.3...v2.0.0

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