Update actionpack requirement from >= 6.0, < 7.2 to >= 6.0, < 8.1

[dependabot]

Updates the requirements on actionpack to permit the latest version.

Release notes

Sourced from actionpack's releases.

7.1.5

Active Support

• No changes.

Active Model

• Fix regression in alias_attribute to work with user defined methods.

  alias_attribute would wrongly assume the attribute accessor was generated by Active Model.

  class Person
    include ActiveModel::AttributeMethods
  define_attribute_methods :name
  attr_accessor :name
  alias_attribute :full_name, :name
  end
  person.full_name # => NoMethodError: undefined method `attribute' for an instance of Person

  Jean Boussier

Active Record

• Fix marshalling of unsaved associated records in 7.1 format.

  The 7.1 format would only marshal associated records if the association was loaded. But associations that would only contain unsaved records would be skipped.

  Jean Boussier

• Fix an issue where .left_outer_joins used with multiple associations that have the same child association but different parents does not join all parents.

  Previously, using .left_outer_joins with the same child association would only join one of the parents.

  Now it will correctly join both parents.

  Fixes #41498.

  Garrett Blehm

• Ensure ActiveRecord::Encryption.config is always ready before access.

... (truncated)

Commits

• 625ec92 Preparing for 7.1.5 release
• 3ddbd08 Merge remote-tracking branch 'origin/7-1-sec' into 7-1-stable
• e52d670 Preparing for 7.1.4.2 release
• 7021f21 [ci skip] Fix CHANGELOG lint errors
• d3ceb6c Merge remote-tracking branch 'origin/7-1-sec' into 7-1-stable
• 5b5f0da Preparing for 7.1.4.1 release
• 76ae935 Update CHANGELOGs
• b0fe99f Avoid backtracking in filtered_query_string
• 7c13988 Avoid backtracking in Token#raw_params
• 1f56fd6 Merge pull request #52962 from rails/rm-releser
• Additional commits viewable in compare view

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