build(deps-dev): update coconut requirement from <2.3.0,>=1.4.3 to >=1.4.3,<3.1.0

[dependabot]

Updates the requirements on coconut to permit the latest version.

Release notes

Sourced from coconut's releases.

Coconut v3.0.2

See Coconut's documentation for more information on all of the features listed below.

This is another patch release, mainly for #751 and #755.

New features:

• #753: async with for loops provide a simple syntax for implementing the recommended pattern for handling async generators.

Language changes:

• #752: typing imports will redirect to typing_extensions whenever possible to ensure you always get the latest implementation of typing objects on all versions.
• #754: async generators and some related utilities will now be automatically backported to 3.5 via the async_generator library.
• #748: Certain confusing Unicode operator alternatives removed.

Compiler changes:

• #750: coconut.convenience renamed to coconut.api (coconut.convenience is still available as an alias for backwards compatibility).

Bugfixes:

• #751: Coconut in xonsh will no longer throw an error in certain situations.
• #755: Due to a documentation rendering issue, previous 3.0.x releases weren't getting their documentation rendered successfully.

Commits

• 603a27f Release v3.0.2 (#758)
• 5ca9eb5 Prepare for v3.0.2 release
• 5605b80 Improve xonsh, windows
• c75f6f3 Merge branch 'master' into develop
• 379d898 Improve docs
• c236bd0 Add type param constraint support
• 5dce827 Improve async generator support
• 9d7d11c Improve async with for syntax
• aaf6925 Fix types
• 75cffe2 Fix constants test
• Additional commits viewable in compare view

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[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (48c45c6) 80.84% compared to head (83b0124) 80.84%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #527   +/-   ##
=======================================
  Coverage   80.84%   80.84%           
=======================================
  Files          30       30           
  Lines        2663     2663           
=======================================
  Hits         2153     2153           
  Misses        510      510           

Flag	Coverage Δ
pytests	80.84% <ø> (ø)

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