⬆️ Update zeroconf to v0.68.0

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
zeroconf (changelog)	==0.66.0 -> ==0.68.0

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Release Notes

python-zeroconf/python-zeroconf

### [`v0.68.0`](https://togithub.com/python-zeroconf/python-zeroconf/blob/HEAD/CHANGELOG.md#v0680-2023-06-17) [Compare Source](https://togithub.com/python-zeroconf/python-zeroconf/compare/0.67.0...0.68.0) ##### Feature - Reduce overhead to handle queries and responses ([#​1184](https://togithub.com/python-zeroconf/python-zeroconf/issues/1184)) ([`81126b7`](https://togithub.com/python-zeroconf/python-zeroconf/commit/81126b7600f94848ef8c58b70bac0c6ab993c6ae)) ### [`v0.67.0`](https://togithub.com/python-zeroconf/python-zeroconf/blob/HEAD/CHANGELOG.md#v0670-2023-06-17) [Compare Source](https://togithub.com/python-zeroconf/python-zeroconf/compare/0.66.0...0.67.0) ##### Feature - Speed up answering incoming questions ([#​1186](https://togithub.com/python-zeroconf/python-zeroconf/issues/1186)) ([`8f37665`](https://togithub.com/python-zeroconf/python-zeroconf/commit/8f376658d2a3bef0353646e6fddfda15626b73a9))

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