Update pytest-timeout requirement from <1.5,>=1.4.2 to >=1.4.2,<2.1 (#1485)

Updates the requirements on [pytest-timeout](https://github.com/pytest-dev/pytest-timeout) to permit the latest version.
- [Release notes](https://github.com/pytest-dev/pytest-timeout/releases)
- [Commits](https://github.com/pytest-dev/pytest-timeout/commits)

---
updated-dependencies:
- dependency-name: pytest-timeout
  dependency-type: direct:development
...

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

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

setup.py

@@ -72,7 +72,7 @@ setup(
             "pytest-asyncio>=0.10,<0.16",
             "beautifulsoup4>=4.8.1,<4.10.0",
             "black==21.7b0",
-            "pytest-timeout>=1.4.2,<1.5",
+            "pytest-timeout>=1.4.2,<2.1",
             "trustme>=0.7,<0.10",
         ],
         "rich": ["rich"],