[deepmerge-ts] Prototype Pollution in deepmerge-ts

deepmerge-ts is vulnerable to Prototype Pollution via file deepmerge.ts, function defaultMergeRecords().

References

• https://github.com/RebeccaStevens/deepmerge-ts/security/advisories/GHSA-r9w3-g83q-m6hq
• https://github.com/RebeccaStevens/deepmerge-ts/commit/b39f1a93d9e1c3541bd2fe159fd696a16dbe1c72
• https://github.com/RebeccaStevens/deepmerge-ts/commit/d637db7e4fb2bfb113cb4bc1c85a125936d7081b
• https://nvd.nist.gov/vuln/detail/CVE-2022-24802
• https://github.com/advisories/GHSA-r9w3-g83q-m6hq