Update dependency better-auth to v1.3.13

Author: renovate[bot]

package.json

@@ -45,7 +45,7 @@
     "@t3-oss/env-nextjs": "^0.13.8",
     "@vercel/analytics": "^1.5.0",
     "@vercel/speed-insights": "^1.2.0",
-    "better-auth": "1.3.8",
+    "better-auth": "1.3.13",
     "botid": "^1.5.4",
     "cheerio": "^1.1.2",
     "class-variance-authority": "^0.7.1",