fix(deps): bump web-auth/webauthn-lib from 4.8.6 to ^4.8.6

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
web-auth/webauthn-lib (source)	^4.8.5 -> ^4.8.6

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[st3iny]

We need to do a major release next and drop Nextcloud <= 29 and PHP <= 8.0.