pip prod(deps): bump blacksheep from 1.2.2 to 1.2.7 (#1161)

Bumps [blacksheep](https://github.com/Neoteroi/BlackSheep) from 1.2.2 to 1.2.7.
- [Release notes](https://github.com/Neoteroi/BlackSheep/releases)
- [Changelog](https://github.com/Neoteroi/BlackSheep/blob/main/CHANGELOG.md)
- [Commits](Neoteroi/BlackSheep@v1.2.2...v1.2.7)

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

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

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

Author: dependabot[bot]

benchmark/requirements.txt

@@ -1,5 +1,5 @@
 aiohttp==3.8.1
-blacksheep==1.2.2
+blacksheep==1.2.7
 starlette==0.17.1
 tornado==6.1
 uvicorn==0.16.0