Update activemodel requirement from ~> 6.1 to ~> 7.0

[dependabot]

Updates the requirements on activemodel to permit the latest version.

Release notes

Sourced from activemodel's releases.

v7.0.4.2

Active Support

• No changes.

Active Model

• No changes.

Active Record

• No changes.

Action View

• No changes.

Action Pack

• Fix domain: :all for two letter TLD

  This fixes a compatibility issue introduced in our previous security release when using domain: :all with a two letter but single level top level domain domain (like .ca, rather than .co.uk).

Active Job

• No changes.

Action Mailer

• No changes.

Action Cable

... (truncated)

Changelog

Sourced from activemodel's changelog.

Rails 7.0.4.2 (January 24, 2023)

• No changes.

Rails 7.0.4.1 (January 17, 2023)

• No changes.

Rails 7.0.4 (September 09, 2022)

• Handle name clashes in attribute methods code generation cache.

  When two distinct attribute methods would generate similar names, the first implementation would be incorrectly re-used.

  class A
    attribute_method_suffix "_changed?"
    define_attribute_methods :x
  end
  class B
  attribute_method_suffix "?"
  define_attribute_methods :x_changed
  end

  Jean Boussier

Rails 7.0.3.1 (July 12, 2022)

• No changes.

Rails 7.0.3 (May 09, 2022)

• No changes.

Rails 7.0.2.4 (April 26, 2022)

• No changes.

Rails 7.0.2.3 (March 08, 2022)

• No changes.

... (truncated)

Commits

• 7c70791 Version 7.0.4.2
• 23e0345 Version 7.0.4.1
• 8015c2c Version 7.0.4
• 60ee8cf Use tap in conditionally-required password example [ci-skip]
• 117aae0 Merge pull request #45754 from jonathanhefner/has_secure_password-conditional...
• a730810 Merge branch '7-0-sec' into 7-0-stable
• 04972d9 Preparing for 7.0.3.1 release
• 0c68c1f updating version and changelog
• 0a23b96 Fix the attribute methods cache backport
• 8e7b3b7 Fix code cache namespacing for proxied attribute methods
• Additional commits viewable in compare view

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