Bump nbmake from 1.5.0 to 1.5.2 in /requirements (microsoft#1935)

Bumps [nbmake](https://github.com/treebeardtech/nbmake) from 1.5.0 to 1.5.2.
- [Release notes](https://github.com/treebeardtech/nbmake/releases)
- [Commits](treebeardtech/nbmake@v1.5.0...v1.5.2)

---
updated-dependencies:
- dependency-name: nbmake
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements/tests.txt

@@ -1,5 +1,5 @@
 # tests
 mypy==1.8.0
-nbmake==1.5.0
+nbmake==1.5.2
 pytest==8.0.2
 pytest-cov==4.1.0