Update dependency whitenoise to v6.7.0

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
whitenoise (changelog)	==6.6.0 -> ==6.7.0

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Release Notes

evansd/whitenoise (whitenoise)

### [`v6.7.0`](https://togithub.com/evansd/whitenoise/compare/6.6.0...6.7.0) [Compare Source](https://togithub.com/evansd/whitenoise/compare/6.6.0...6.7.0)

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