chore(deps): update dependency postcss-preset-env to ^10.3.0 (spectrum-two)

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
postcss-preset-env (source)	^10.2.4 -> ^10.3.0

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Release Notes

csstools/postcss-plugins (postcss-preset-env)

v10.3.0

Compare Source

August 22, 2025

• Added @csstools/postcss-alpha-function Check the plugin README for usage details.
• Added @csstools/postcss-color-function-display-p3-linear Check the plugin README for usage details.
• Updated @csstools/css-color-parser to 3.1.0 (minor)
• Updated @csstools/postcss-color-function to 4.0.11 (patch)
• Updated @csstools/postcss-color-mix-function to 3.0.11 (patch)

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PR #4154 has been deployed to Azure Blob Storage: https://spectrumcss.z13.web.core.windows.net/pr-4154/index.html.

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Total size: 1.43 MB^*

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[castastrophe]

A lot of great polyfill updates for forward-facing CSS support here. 🥳 No impact to our code as yet (as we're not using these utilities).