Bump test deps in mock-server (#1463)

Bumps
[follow-redirects]
(https://github.com/follow-redirects/follow-redirects)
to 1.15.4 and updates ancestor dependency
[mockserver-node]
(https://github.com/mock-server/mockserver-node).
These dependencies need to be updated together.

Updates `follow-redirects` from 1.14.8 to 1.15.4
-[Release notes]
(https://github.com/follow-redirects/follow-redirects/releases)
-[Commits](https://t.ly/uLP5Y)

Updates `mockserver-node` from 5.12.0 to 5.15.0
- [Commits](https://t.ly/ODcml)

---
updated-dependencies:
- dependency-name: follow-redirects
  dependency-type: indirect
- dependency-name: mockserver-node
  dependency-type: direct:production
...

Relates-To: MINOR-TEST-DEPS-UPDATE

Signed-off-by: Yaroslav Stefinko <ext-yaroslav.stefinko@here.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

tests/utils/mock-server/package-lock.json

@@ -18,6 +18,6 @@
         "HERE Technologies"
     ],
     "dependencies": {
-        "mockserver-node": "^5.12.0"
+        "mockserver-node": "^5.15.0"
     }
 }