Update dependency stylus to v0.54.8

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
stylus	devDependencies	patch	0.54.5 -> 0.54.8

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Release Notes

stylus/stylus

v0.54.8

Compare Source

v0.54.7

Compare Source

v0.54.6

Compare Source

• Fix issue with cos & sin not stripping rad unit. #​2284
• Fix: handle empty at-rules #​2416
• Define function arguments explicitly #​2417
• Do not use the deprecated Buffer() constructor #​2424
• Fix issues #​2411
• Use mkdir() recursive option instead of mkdirp()
• Fix no such directory error in Stylus Executable #​2421
• Fixed define column for mixin #​2456
• Fix work with hash #​2453
• Extend in block level import #​2270
• Fix: check whether captureStackTrace exists #​2394
• Make prefix-classes work with partial and range refs in selectors #​2278
• Extend length method to work with strings #​2110
• add quiet flag to have a more "quiet" output. #​2088
• Support for cssnext nested at-rule syntax (apply, nested) #​2335

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