chore(deps): update tailwindcss monorepo to v4.1.15 (#2315)

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

Author: renovate[bot]

package.json

@@ -81,7 +81,7 @@
     "@primer/octicons-react": "19.19.0",
     "@primer/primitives": "11.2.1",
     "@primer/react": "37.31.0",
-    "@tailwindcss/postcss": "4.1.14",
+    "@tailwindcss/postcss": "4.1.15",
     "@testing-library/jest-dom": "6.9.1",
     "@testing-library/react": "16.3.0",
     "@testing-library/user-event": "14.6.1",
@@ -115,7 +115,7 @@
     "semver": "7.7.3",
     "styled-components": "6.1.19",
     "tailwind-merge": "3.3.1",
-    "tailwindcss": "4.1.14",
+    "tailwindcss": "4.1.15",
     "terser-webpack-plugin": "5.3.14",
     "ts-jest": "29.4.5",
     "ts-loader": "9.5.4",