Update dependency web-ext-submit to v7.8.0

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
web-ext-submit	7.5.0 -> 7.8.0

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Release Notes

fregante/web-ext-submit (web-ext-submit)

### [`v7.8.0`](https://togithub.com/fregante/web-ext-submit/compare/v7.7.0...v7.8.0) [Compare Source](https://togithub.com/fregante/web-ext-submit/compare/v7.7.0...v7.8.0) ### [`v7.7.0`](https://togithub.com/fregante/web-ext-submit/compare/v7.6.2...v7.7.0) [Compare Source](https://togithub.com/fregante/web-ext-submit/compare/v7.6.2...v7.7.0) ### [`v7.6.2`](https://togithub.com/fregante/web-ext-submit/compare/v7.6.1...v7.6.2) [Compare Source](https://togithub.com/fregante/web-ext-submit/compare/v7.6.1...v7.6.2) ### [`v7.6.1`](https://togithub.com/fregante/web-ext-submit/compare/v7.6.0...v7.6.1) [Compare Source](https://togithub.com/fregante/web-ext-submit/compare/v7.6.0...v7.6.1) ### [`v7.6.0`](https://togithub.com/fregante/web-ext-submit/compare/v7.5.0...v7.6.0) [Compare Source](https://togithub.com/fregante/web-ext-submit/compare/v7.5.0...v7.6.0)

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