Bump styled-components from 6.1.18 to 6.4.2

Bumps [styled-components](https://github.com/styled-components/styled-components) from 6.1.18 to 6.4.2.
- [Release notes](https://github.com/styled-components/styled-components/releases)
- [Commits](https://github.com/styled-components/styled-components/compare/styled-components@6.1.18...styled-components@6.4.2)

---
updated-dependencies:
- dependency-name: styled-components
  dependency-version: 6.4.2
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

package-lock.json

@@ -82,7 +82,7 @@
     "redux": "^5.0.1",
     "rehype-katex": "^7.0.0",
     "remark-math": "^6.0.0",
-    "styled-components": "^6.1.8",
+    "styled-components": "^6.4.2",
     "swiper": "^11.1.4",
     "tailwind-merge": "^3.4.0",
     "three": "^0.176.0",