build(deps): bump @auth/core from 0.17.0 to 0.18.6

Bumps [@auth/core](https://github.com/nextauthjs/next-auth) from 0.17.0 to 0.18.6.
- [Release notes](https://github.com/nextauthjs/next-auth/releases)
- [Commits](https://github.com/nextauthjs/next-auth/compare/@auth/core@0.17.0...@auth/core@0.18.6)

---
updated-dependencies:
- dependency-name: "@auth/core"
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

package.json

@@ -36,7 +36,7 @@
   },
   "type": "module",
   "dependencies": {
-    "@auth/core": "^0.17.0",
+    "@auth/core": "^0.18.6",
     "@auth/sveltekit": "0.3.7",
     "bits-ui": "^0.6.3",
     "clsx": "^2.0.0",