Bump @primer/css from 21.5.1 to 22.0.0 (#3549)

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Author: dependabot[bot]

package-lock.json

@@ -68,7 +68,7 @@
     "@github/markdownlint-github": "^0.7.0",
     "@github/prettier-config": "0.0.6",
     "@playwright/test": "^1.49.1",
-    "@primer/css": "21.5.1",
+    "@primer/css": "22.0.0",
     "@primer/stylelint-config": "^13.1.1",
     "@rollup/plugin-node-resolve": "^16.0.1",
     "@rollup/plugin-typescript": "^8.3.3",