Bump hypothesis from 6.98.8 to 6.99.4 in /etc/requirements_dependabot

Bumps [hypothesis](https://github.com/HypothesisWorks/hypothesis) from 6.98.8 to 6.99.4.
- [Release notes](https://github.com/HypothesisWorks/hypothesis/releases)
- [Commits](HypothesisWorks/hypothesis@hypothesis-python-6.98.8...hypothesis-python-6.99.4)

---
updated-dependencies:
- dependency-name: hypothesis
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

etc/requirements_dependabot/requirements_tests.txt

@@ -35,7 +35,7 @@ flake8==7.0.0
     #   market-prices (pyproject.toml)
 flake8-docstrings==1.7.0
     # via market-prices (pyproject.toml)
-hypothesis==6.98.8
+hypothesis==6.99.4
     # via market-prices (pyproject.toml)
 idna==3.6
     # via requests