chore(deps): update dependency dnspython to v2.4.2

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
dnspython (source)	==2.4.1 -> ==2.4.2

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Release Notes

rthalley/dnspython (dnspython)

### [`v2.4.2`](https://togithub.com/rthalley/dnspython/compare/v2.4.1...v2.4.2) [Compare Source](https://togithub.com/rthalley/dnspython/compare/v2.4.1...v2.4.2)

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