chore(deps): bump better-auth from 1.6.28 to 1.7.2

Bumps [better-auth](https://github.com/better-auth/better-auth/tree/HEAD/packages/better-auth) from 1.6.28 to 1.7.2.
- [Release notes](https://github.com/better-auth/better-auth/releases)
- [Changelog](https://github.com/better-auth/better-auth/blob/main/packages/better-auth/CHANGELOG.md)
- [Commits](https://github.com/better-auth/better-auth/commits/v1.7.2/packages/better-auth)

---
updated-dependencies:
- dependency-name: better-auth
  dependency-version: 1.7.2
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

packages/auth/package.json

@@ -39,7 +39,7 @@
   "dependencies": {
     "@object-ui/types": "workspace:*",
     "@objectstack/spec": "^17.0.0",
-    "better-auth": "^1.6.28"
+    "better-auth": "^1.7.2"
   },
   "devDependencies": {
     "@types/react": "19.2.18",