Bump httpx[http2] from 0.27.0 to 0.27.2 in /tools

Bumps [httpx[http2]](https://github.com/encode/httpx) from 0.27.0 to 0.27.2.
- [Release notes](https://github.com/encode/httpx/releases)
- [Changelog](https://github.com/encode/httpx/blob/master/CHANGELOG.md)
- [Commits](encode/httpx@0.27.0...0.27.2)

---
updated-dependencies:
- dependency-name: httpx[http2]
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

tools/requirements_tests.txt

@@ -1,4 +1,4 @@
-httpx[http2]==0.27.0
+httpx[http2]==0.27.2
 json-e==4.7.0
 jsonschema==4.17.3
 pyyaml==6.0.1