Update dependency svgo to v3.1.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
svgo (source)	3.0.5 -> 3.1.0

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Release Notes

svg/svgo (svgo)

v3.1.0

Compare Source

What's Changed

Bug Fixes

• Prefix IDs, correctly prefix IDs when <style> tag contains XML comments. By @​john-neptune in https://github.com/svg/svgo/pull/1736
• Remove Hidden Elements, improve handling of definitions (<defs>), namely when <defs> are defined at the end of the document. By @​KTibow in https://github.com/svg/svgo/pull/1879
• Cleanup Enable Background, clean up inline-styles too. By @​SethFalco in https://github.com/svg/svgo/pull/1866
• Cleanup IDs, handle URI encoded references properly. By @​SethFalco in https://github.com/svg/svgo/pull/1880
• Inline Styles, no longer crashes on non-inlined selectors with a pseudo-class. By @​SethFalco in https://github.com/svg/svgo/pull/1865
• Improve handling of URL references in reference attributes (url('#a')) across various plugins. By @​SethFalco in https://github.com/svg/svgo/pull/1881

SVG Optimization

• Remove Unknowns and Defaults, now removes defaults in XML declarations too, enabled by default and can be toggled with defaultMarkupDeclarations. By @​SethFalco in https://github.com/svg/svgo/pull/1872

Metrics

Before and after using vectors from various sources, with the default preset of each respective version:

SVG	Original	v3.0.5	v3.1.0	Delta
Arch Linux Logo	9.529 KiB	4.608 KiB	4.162 KiB	⬇️ 0.446 KiB
Blobs	50.45 KiB	42.949 KiB	42.949 KiB
Isometric Madness	869.034 KiB	550.153 KiB	550.153 KiB
tldr-pages Banner	2.071 KiB	1.07 KiB	1.07 KiB
Wikipedia Logo	161.551 KiB	117.146 KiB	116 KiB	⬇️ 1.146 KiB

Before and after of the browser bundle of each respective version:

	v3.0.5	v3.1.0	Delta
svgo.browser.js	657.5 kB	660.9 kB	⬆️ 3.4 kB

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