Update rails requirement from >= 6.0, < 7.3 to >= 6.0, < 8.1

[dependabot]

Updates the requirements on rails to permit the latest version.

Release notes

Sourced from rails's releases.

8.0.0

Active Support

• Remove deprecated support to passing an array of strings to ActiveSupport::Deprecation#warn.

  Rafael Mendonça França

• Remove deprecated support to setting attr_internal_naming_format with a @ prefix.

  Rafael Mendonça França

• Remove deprecated ActiveSupport::ProxyObject.

  Rafael Mendonça França

• Don't execute i18n watcher on boot. It shouldn't catch any file changes initially, and unnecessarily slows down boot of applications with lots of translations.

  Gannon McGibbon, David Stosik

• Fix ActiveSupport::HashWithIndifferentAccess#stringify_keys to stringify all keys not just symbols.

  Previously:

  { 1 => 2 }.with_indifferent_access.stringify_keys[1] # => 2

  After this change:

  { 1 => 2 }.with_indifferent_access.stringify_keys["1"] # => 2

  This change can be seen as a bug fix, but since it behaved like this for a very long time, we're deciding to not backport the fix and to make the change in a major release.

  Jean Boussier

• Include options when instrumenting ActiveSupport::Cache::Store#delete and ActiveSupport::Cache::Store#delete_multi.

  Adam Renberg Tamm

• Print test names when running rails test -v for parallel tests.

  John Hawthorn, Abeid Ahmed

• Deprecate Benchmark.ms core extension.

  The benchmark gem will become bundled in Ruby 3.5

... (truncated)

Commits

• dd8f718 Preparing for 8.0.0 release
• f88e6ae Merge pull request #53550 from tysongach/devcontainer-links
• 43425c8 Bump deprecation message to 8.1
• 38bf52d Add yarn.lock to allowed dirty files
• 3de9afc Merge pull request #53546 from matthewd/dst_deprecation_fix
• ebcb66e Merge pull request #53542 from Uaitt/remove-redundant-period-in-security-guides
• 4f042a8 Merge pull request #53520 from Earlopain/fix-backtrace-env-gem-paths
• 74608e5 Merge pull request #53533 from Earlopain/no-docs-for-rackup
• 8ee2d3e Merge pull request #53504 from SleeplessByte/fix/anchor-scroll-mobile
• 473f2b2 Merge pull request #53515 from k-tsuchiya-jp/fix-53467
• Additional commits viewable in compare view

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