Update Font Awesome to v6.4.2

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@fortawesome/fontawesome-free (source)	6.4.0 -> 6.4.2
@fortawesome/free-solid-svg-icons (source)	6.4.0 -> 6.4.2

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Release Notes

FortAwesome/Font-Awesome (@​fortawesome/fontawesome-free)

v6.4.2

Compare Source

Change log available at https://fontawesome.com/docs/changelog/

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