⬆ Bump time-machine from 2.15.0 to 2.19.0

Bumps [time-machine](https://github.com/adamchainz/time-machine) from 2.15.0 to 2.19.0.
- [Changelog](https://github.com/adamchainz/time-machine/blob/main/docs/changelog.rst)
- [Commits](adamchainz/time-machine@2.15.0...2.19.0)

---
updated-dependencies:
- dependency-name: time-machine
  dependency-version: 2.19.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

requirements-tests.txt

@@ -5,4 +5,4 @@ coverage[toml] >=6.2,<8.0
 mypy ==1.14.1
 ruff ==0.13.0
 respx ==0.22.0
-time-machine ==2.15.0
+time-machine ==2.19.0