pip(deps): update moto requirement from ~=3.0 to ~=3.1

[dependabot]

Updates the requirements on moto to permit the latest version.

Changelog

Sourced from moto's changelog.

3.1.0

Docker Digest for 3.1.0: sha256:1656754cf4de441d85b08f584d9dcb095880d3bf250f05da26a03ff219d586c8

General:
    * Users of `mock_dynamodb2` should start using `mock_dynamodb` instead. 
      The `mock_dynamodb`-decorator has been repurposed to mock the latest version of DynamoDB, making the behaviour equivalent to `mock_dynamodb2`. 
      The `mock_dynamodb2`-decorator is now considered deprecated, and will be removed in the next major version.
* Similarly, users of the `mock_rds2` should start using `mock_rds` instead.
  The `mock_rds`-decorator has been repurposed to mock the latest version of RDS, making the behaviour equivalent to `mock_rds2`.
  The `mock_rds2`-decorator has also been deprecated, and will be removed in the next major version.

Internal Changes:
* We've upgraded our linting process to use Black 22.1.0, and have enabled more pylint rules.
Please continue to run make lint prior to creating a PR, to ensure any changes are formatted correctly.

3.0.7

Docker Digest for 3.0.7: sha256:4db9433e741de635606fd2d997e555c26f51fc82e69d5043d0d9de90bbade229

General:
    * Compatible with the latest `responses`-release (0.19.0)
New Services:
* DataBrew:
* create_recipe()
* get_recipe()
* list_recipes()
* Pinpoint:
    * create_app()
    * delete_app()
    * delete_event_stream()
    * get_app()
    * get_application_settings()
    * get_apps()
    * get_event_stream()
    * list_tags_for_resource()
    * put_event_stream()
    * tag_resource()
    * untag_resource()
    * update_application_settings()

3.0.6

Docker Digest for 3.0.6: sha256:de6b4ba576e143b3bbae250186b563c836f233afea5b3579629d3565824de74d

General:
    * Feature to start the MotoServer from within Python (in beta)

... (truncated)

Commits

• f9d116f Prepare release 3.1.0 (#4938)
• 382ff2b Remove more DynamoDB2 references (#4933)
• eed32a5 Pylint - Enable more rules on source and tests-directory (#4929)
• e03ec43 Fix RDS incorrect statuses (#4930)
• 29d01c3 Update Black + formatting (#4926)
• a4f58f0 CognitoIdp fixes (#4518)
• 07913cf Deprecate mock_dynamodb2 (#4919)
• 9dccebc Deprecate RDS2 (#4920)
• 778c8d7 Update init.py
• 907b351 Post-release steps
• Additional commits viewable in compare view

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[coveralls]

Pull Request Test Coverage Report for Build 1979362150

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage increased (+0.1%) to 95.979%

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Files with Coverage Reduction	New Missed Lines	%
spock/graph.py	1	94.17%

Totals
Change from base Build 1971124196:	0.1%
Covered Lines:	1838
Relevant Lines:	1915

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💛 - Coveralls

[dependabot]

A newer version of moto 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.