Update NodeJS dependencies

This MR contains the following updates:

Package	Type	Update	Change
@gitlab/ui	dependencies	minor	^49.6.0 -> ^49.8.0
postcss (source)	devDependencies	patch	^8.4.18 -> ^8.4.19
rollup (source)	devDependencies	minor	^3.2.5 -> ^3.3.0
stylelint (source)	devDependencies	minor	^14.14.1 -> ^14.15.0

MR created with the help of gitlab-org/frontend/renovate-gitlab-bot

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Release Notes

gitlab-org/gitlab-ui

v49.8.0

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Features

• Add brand colours to the variables list (4baab55)

v49.7.0

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Features

• BroadcastMessage: Equal top and bottom margin (8b548f1)
• BroadcastMessage: Refine alignment (c59fc65)

postcss/postcss

v8.4.19

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• Fixed whitespace preserving after AST transformations (by Romain Menke).

rollup/rollup

v3.3.0

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2022-11-12

Features

• Add "experimentalMinChunkSize" option to merge smaller chunks into larger ones (#​4705)
• Automatically deduplicate assets again when the source is a Buffer (#​4712)
• Deduplicate Buffer with string assets (#​4712)

Bug Fixes

• Support plugins with object hooks when using perf: true (#​4707)

Merge Requests

• #​4702: docs: add additional tips for heap out of memory (@​benmccann)
• #​4705: Allow to define minimum chunk size limit (@​lukastaegert)
• #​4707: Fix perf timers for object hooks (@​lukastaegert)
• #​4710: Update terser docs (@​nikolas)
• #​4712: feat: deduplicate assets with buffer source (@​patak-dev)

stylelint/stylelint

v14.15.0

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• Added: --globby-options flag (#​6437) (@​sidverma32).
• Added: custom message formatting for at-rule-disallowed-list, declaration-property-unit-disallowed-list, declaration-property-value-disallowed-list, function-disallowed-list, and property-disallowed-list (#​6463) (@​chloerice).
• Added: support autofix with checkAgainstRule (#​6466) (@​aaronccasanova).
• Added: support for reporting with custom severity (#​6444) (@​aaronccasanova).
• Added: support to checkAgainstRule with custom rules (#​6460) (@​aaronccasanova).
• Fixed: tally output of string formatter colorized (#​6443) (@​ybiquitous).
• Fixed: usage of the import-lazy package to fit bundlers (#​6449) (@​phoenisx).

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