[#948] Bump focus-trap to v7.4.0 for new onPost/Pause and onPost/Unpause hooks

[stefcameron]

Fixes #948

PR Checklist

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• Issue being fixed is referenced.
• Source changes maintain:
  • Stated browser compatibility.
  • Stated React compatibility.
• Unit test coverage added/updated.
• E2E test coverage added/updated.
• Prop-types added/updated.
• Typings added/updated.
• Changes do not break SSR:
  • Careful to test typeof document/window !== 'undefined' before using it in code that gets executed on load.
• README updated (API changes, instructions, etc.).
• Changes to dependencies explained.
• Changeset added (run yarn changeset locally to add one, and follow the prompts).
  • EXCEPTION: A Changeset is not required if the change does not affect any of the source files that produce the package bundle. For example, demo changes, tooling changes, test updates, or a new dev-only dependency to run tests more efficiently should not have a Changeset since it will not affect package consumers.

[changeset-bot]

🦋 Changeset detected

Latest commit: a8525a1

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
focus-trap-react	Patch

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[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (7b4e196) 90.32% compared to head (a8525a1) 90.32%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #949   +/-   ##
=======================================
  Coverage   90.32%   90.32%           
=======================================
  Files           1        1           
  Lines         155      155           
  Branches       68       68           
=======================================
  Hits          140      140           
  Misses         13       13           
  Partials        2        2           

Impacted Files	Coverage Δ
src/focus-trap-react.js	90.32% <ø> (ø)

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