Update dependency imagesize to v1.3.0

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
imagesize	==1.2.0 -> ==1.3.0

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Release Notes

shibukawa/imagesize_py

### [`v1.3.0`](https://togithub.com/shibukawa/imagesize_py/compare/1.2.0...1.3.0) [Compare Source](https://togithub.com/shibukawa/imagesize_py/compare/1.2.0...1.3.0)

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