Bump lodash from 4.17.21 to 4.18.1 in /ts-tests

Bumps [lodash](https://github.com/lodash/lodash) from 4.17.21 to 4.18.1.
- [Release notes](https://github.com/lodash/lodash/releases)
- [Commits](lodash/lodash@4.17.21...4.18.1)

---
updated-dependencies:
- dependency-name: lodash
  dependency-version: 4.18.1
  dependency-type: indirect
...

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

Author: dependabot[bot]

ts-tests/yarn.lock

@@ -4941,9 +4941,9 @@ __metadata:
   linkType: hard
 
 "lodash@npm:^4.17.14, lodash@npm:^4.17.15, lodash@npm:^4.17.21":
-  version: 4.17.21
-  resolution: "lodash@npm:4.17.21"
-  checksum: 10c0/d8cbea072bb08655bb4c989da418994b073a608dffa608b09ac04b43a791b12aeae7cd7ad919aa4c925f33b48490b5cfe6c1f71d827956071dae2e7bb3a6b74c
+  version: 4.18.1
+  resolution: "lodash@npm:4.18.1"
+  checksum: 10c0/757228fc68805c59789e82185135cf85f05d0b2d3d54631d680ca79ec21944ec8314d4533639a14b8bcfbd97a517e78960933041a5af17ecb693ec6eecb99a27
   languageName: node
   linkType: hard