Update dependency isbot to v5.1.13

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
isbot (source)	5.1.12 -> 5.1.13

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Release Notes

omrilotan/isbot (isbot)

### [`v5.1.13`](https://togithub.com/omrilotan/isbot/blob/HEAD/CHANGELOG.md#5113) [Compare Source](https://togithub.com/omrilotan/isbot/compare/v5.1.12...v5.1.13) - \[Pattern] Recognise [Owler (Open Web Search Project)](https://openwebsearch.eu/owler/) as a bot

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