chore(deps): update tailwindcss monorepo to v4.1.18 (#2453)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package.json

@@ -83,7 +83,7 @@
     "@primer/octicons-react": "19.21.1",
     "@primer/primitives": "11.3.2",
     "@primer/react": "38.5.0",
-    "@tailwindcss/postcss": "4.1.17",
+    "@tailwindcss/postcss": "4.1.18",
     "@testing-library/jest-dom": "6.9.1",
     "@testing-library/react": "16.3.0",
     "@testing-library/user-event": "14.6.1",
@@ -118,7 +118,7 @@
     "semver": "7.7.3",
     "styled-components": "6.1.19",
     "tailwind-merge": "3.4.0",
-    "tailwindcss": "4.1.17",
+    "tailwindcss": "4.1.18",
     "terser-webpack-plugin": "5.3.15",
     "ts-jest": "29.4.6",
     "ts-loader": "9.5.4",