chore: bump styled-components from 6.1.19 to 6.3.12

Bumps [styled-components](https://github.com/styled-components/styled-components) from 6.1.19 to 6.3.12.
- [Release notes](https://github.com/styled-components/styled-components/releases)
- [Commits](https://github.com/styled-components/styled-components/compare/styled-components@6.1.19...styled-components@6.3.12)

---
updated-dependencies:
- dependency-name: styled-components
  dependency-version: 6.3.12
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

package-lock.json

@@ -64,7 +64,7 @@
     "react-slot-counter": "^3.3.1",
     "rehype-katex": "^7.0.1",
     "remark-math": "^6.0.0",
-    "styled-components": "^6.1.18",
+    "styled-components": "^6.3.12",
     "tailwind-merge": "^3.2.0",
     "tw-animate-css": "^1.2.8",
     "vanilla-tilt": "^1.8.1"