Update dependency csso to v5.0.5

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Confidence
csso	5.0.2 -> 5.0.5

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Release Notes

css/csso (csso)

v5.0.5

Compare Source

• Bumped css-tree to ~2.2.0 (#​458)

v5.0.4

Compare Source

• Fixed usage filtering for from/to selectors in keyframes at-rule (#​448)
• Fixed removing medium in font declarations since it breaks the value since <font-size> is required (#​449)

v5.0.3

Compare Source

• Fixed CommonJS version bundling when browser field is used
• Added module field

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