Bump activesupport from 8.1.1 to 8.1.2.1

[dependabot]

Bumps activesupport from 8.1.1 to 8.1.2.1.

Release notes

Sourced from activesupport's releases.

8.1.2.1

Active Support

• Reject scientific notation in NumberConverter

  [CVE-2026-33176]

  Jean Boussier

• Fix SafeBuffer#% to preserve unsafe status

  [CVE-2026-33170]

  Jean Boussier

• Improve performance of NumberToDelimitedConverter

  [CVE-2026-33169]

  Jean Boussier

Active Model

• No changes.

Active Record

• No changes.

Action View

• Skip blank attribute names in tag helpers to avoid generating invalid HTML.

  [CVE-2026-33168]

  Mike Dalessio

Action Pack

• Fix possible XSS in DebugExceptions middleware

  [CVE-2026-33167]

  John Hawthorn

... (truncated)

Changelog

Sourced from activesupport's changelog.

Rails 8.1.2.1 (March 23, 2026)

• Reject scientific notation in NumberConverter

  [CVE-2026-33176]

  Jean Boussier

• Fix SafeBuffer#% to preserve unsafe status

  [CVE-2026-33170]

  Jean Boussier

• Improve performance of NumberToDelimitedConverter

  [CVE-2026-33169]

  Jean Boussier

Rails 8.1.2 (January 08, 2026)

• Make delegate and delegate_missing_to work in BasicObject subclasses.

  Rafael Mendonça França

• Fix Inflectors when using a locale that fallbacks to :en.

  Said Kaldybaev

• Fix ActiveSupport::TimeWithZone#as_json to consistently return UTF-8 strings.

  Previously the returned string would sometime be encoded in US-ASCII, which in some cases may be problematic.

  Now the method consistently always return UTF-8 strings.

  Jean Boussier

• Fix TimeWithZone#xmlschema when wrapping a DateTime instance in local time.

  Previously it would return an invalid time.

  Dmytro Rymar

• Implement LocalCache strategy on ActiveSupport::Cache::MemoryStore. The memory store needs to respond to the same interface as other cache stores (e.g. ActiveSupport::NullStore).

  Mikey Gough

... (truncated)

Commits

• 1db4b89 Preparing for 8.1.2.1 release
• 1c7d1cf Update changelog
• ec1a0e2 Improve performance of NumberToDelimitedConverter
• 50d732a Fix SafeBuffer#% to preserve unsafe status
• 19dbab5 NumberConverter: reject scientific notation
• d7c8ae6 Preparing for 8.1.2 release
• 3ea2701 CHANGELOG sync
• 0f8014a [8-1-stable] Minitest 6 support
• 991ccf3 Merge pull request #56393 from rails/add-exclude-keys-to-live-controller
• c86465f Merge pull request #56353 from rails/rmf-delegation-basic-object
• Additional commits viewable in compare view

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