[dependabot]: Bump activemodel from 8.0.2.1 to 8.0.3

[dependabot]

Bumps activemodel from 8.0.2.1 to 8.0.3.

Release notes

Sourced from activemodel's releases.

8.0.3

Active Support

• ActiveSupport::FileUpdateChecker does not depend on Time.now to prevent unnecessary reloads with time travel test helpers

  Jan Grodowski

• Fix ActiveSupport::BroadcastLogger from executing a block argument for each logger (tagged, info, etc.).

  Jared Armstrong

• Make ActiveSupport::Logger #freeze-friendly.

  Joshua Young

• Fix ActiveSupport::HashWithIndifferentAccess#transform_keys! removing defaults.

  Hartley McGuire

• Fix ActiveSupport::HashWithIndifferentAccess#tranform_keys! to handle collisions.

  If the transformation would result in a key equal to another not yet transformed one, it would result in keys being lost.

  Before:

  >> {a: 1, b: 2}.with_indifferent_access.transform_keys!(&:succ)
  => {"c" => 1}

  After:

  >> {a: 1, b: 2}.with_indifferent_access.transform_keys!(&:succ)
  => {"c" => 1, "d" => 2}

  Jason T Johnson, Jean Boussier

• Fix ActiveSupport::Cache::MemCacheStore#read_multi to handle network errors.

  This method specifically wasn't handling network errors like other codepaths.

  Alessandro Dal Grande

• Fix configuring RedisCacheStore with raw: true.

  fatkodima

... (truncated)

Changelog

Sourced from activemodel's changelog.

Rails 8.0.3 (September 22, 2025)

• Fix has_secure_password to perform confirmation validation of the password even when blank.

  The validation was incorrectly skipped when the password only contained whitespace characters.

  Fabio Sangiovanni

Commits

• 529f933 Preparing for 8.0.3 release
• 1cab75f Merge pull request #55677 from alexkuebo/patch-1
• b2ad417 Merge security patches in 8-0-stable
• f5a0c11 Use comment for example return values [ci-skip]
• 5f3b209 Replace "mailing list" with "forum" [ci-skip]
• bbb624b Link using rdoc-ref instead of rdoc-label [ci-skip]
• cb12148 Use headings for args documentation [ci-skip]
• 739827f Improve Active Model changelog
• 2b971fd Merge pull request #55232 from callmesangio/fix-gh-55225
• 9f62452 Merge pull request #55085 from Earlopain/namespaced
• Additional commits viewable in compare view

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[dependabot]

A newer version of activemodel exists, but since this PR has been edited by someone other than Dependabot I haven't updated it. You'll get a PR for the updated version as normal once this PR is merged.