chore(deps-dev): 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:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

requirements-dev.txt

@@ -62,7 +62,7 @@ requests==2.32.5
 six==1.17.0
 sniffio==1.3.1
 std-uritemplate>=2.0.0
-time-machine==2.15.0
+time-machine==2.19.0
 toml==0.10.2
 tomli==2.2.1
 tomli_w==1.2.0