Update dependency mypy to v1.8.0

This MR contains the following updates:

Package	Update	Change
mypy (source, changelog)	minor	==1.3.0 -> ==1.8.0

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Release Notes

python/mypy (mypy)

v1.8.0

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v1.7.1

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v1.7.0

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v1.6.1

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v1.6.0

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v1.5.1

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v1.5.0

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v1.4.1

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v1.4.0

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Configuration

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