v1.22.0

AEA:

• Updates the cert request serialisation process to maintain consistency across different operating systems
• Updates the get_or_create_cli_config method to return default config instead of creating one
• Introduces the copy_class utility function for testing different setup configurations
• Updates the overridable policies for the configuration classes

Packages:

• Removes the unwanted autonomy dependency from the ledger connection

Tests:

• Updates the cli config fixture to retain user config
• Fixes outbox check test
• Adds test coverage for
  • aea/cli
  • aea/configurations
  • aea/helpers
  • aea/test_tools
  • aea/manager

Docs:

• Adds documentation on the usage of component overrides

Chores:

• Adds a script to automatically generate a package table for the docs
• Introduces the usage of tomte to maintain third party dependency version consistency
• Updates the script to check the broken links to use parallelisation