Bump better-auth from 1.4.9 to 1.5.5

Bumps [better-auth](https://github.com/better-auth/better-auth/tree/HEAD/packages/better-auth) from 1.4.9 to 1.5.5.
- [Release notes](https://github.com/better-auth/better-auth/releases)
- [Commits](https://github.com/better-auth/better-auth/commits/v1.5.5/packages/better-auth)

---
updated-dependencies:
- dependency-name: better-auth
  dependency-version: 1.5.5
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

package.json

@@ -27,7 +27,7 @@
     "@tanstack/react-table": "^8.21.3",
     "@types/md5": "^2.3.6",
     "@types/validator": "^13.15.10",
-    "better-auth": "1.4.9",
+    "better-auth": "1.5.5",
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
     "cmdk": "^1.1.1",