Bump focus-trap to 6.7.3

[stefcameron]

PR Checklist

Please leave this checklist in your PR.

• 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.
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[changeset-bot]

🦋 Changeset detected

Latest commit: 29c02d4

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

Merging #599 (29c02d4) into master (ca98c16) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #599   +/-   ##
=======================================
  Coverage   95.20%   95.20%           
=======================================
  Files           1        1           
  Lines         125      125           
  Branches       50       50           
=======================================
  Hits          119      119           
  Misses          6        6           

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