chore: update lodash to 4.18.1

[jcstein]

Summary

Resolves https://github.com/celestiaorg/celestia.org/security/dependabot?q=is%3Aopen+manifest%3Apackage-lock.json+package%3Alodash

• update the locked transitive lodash dependency from 4.17.23 to 4.18.1
• clear the open package-lock.json Dependabot alerts for lodash
• avoid broader dependency churn by limiting the change to the lockfile entry

Verification

• npm update lodash --package-lock-only --ignore-scripts
• npm audit --json no longer reports a lodash vulnerability
• npm audit --omit=dev --json no longer reports a lodash vulnerability

[github-actions]

🔗 Link Checker Results

Broken Links Report

Metric	Count
Total Scanned	265
✅ OK	263
🛡️ Bot Protected (403 accepted)	50
⏭️ Skipped	0
❌ Broken	2

Broken Links

❌ 525 SSL Handshake Failed

• Broken URL: https://v1.cosmos.network/sdk
• Found on: https://celestia.org/glossary/

❌ 404 Not Found

• Broken URL: https://celestia.org/learn/beginners/modular-blockchains-for-beginners/glossary/state-transition-fraud-proof
• Found on: https://celestia.org/learn/beginners/modular-blockchains-for-beginners/