Bump @loopback/testlab from 6.1.3 to 7.0.8

Bumps [@loopback/testlab](https://github.com/loopbackio/loopback-next/tree/HEAD/packages/testlab) from 6.1.3 to 7.0.8.
- [Changelog](https://github.com/loopbackio/loopback-next/blob/master/packages/testlab/CHANGELOG.md)
- [Commits](https://github.com/loopbackio/loopback-next/commits/@loopback/[email protected]/packages/testlab)

---
updated-dependencies:
- dependency-name: "@loopback/testlab"
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -82,7 +82,7 @@
   "devDependencies": {
     "@loopback/build": "^10.1.3",
     "@loopback/eslint-config": "^14.0.4",
-    "@loopback/testlab": "^7.0.7",
+    "@loopback/testlab": "^7.0.8",
     "@types/big.js": "^6.1.2",
     "@types/bs58": "^4.0.1",
     "@types/node": "^16.18.50",