Update dependency @fortawesome/fontawesome-free to v6

This MR contains the following updates:

Package	Type	Update	Change
@fortawesome/fontawesome-free (source)	dependencies	major	5.15.4 -> 6.2.0

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Release Notes

FortAwesome/Font-Awesome

v6.2.0

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

v6.1.2

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

v6.1.1

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

v6.1.0

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

v6.0.0

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

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