build(deps): bump structlog from 24.4.0 to 25.3.0 in /tools

Bumps [structlog](https://github.com/hynek/structlog) from 24.4.0 to 25.3.0.
- [Release notes](https://github.com/hynek/structlog/releases)
- [Changelog](https://github.com/hynek/structlog/blob/main/CHANGELOG.md)
- [Commits](hynek/structlog@24.4.0...25.3.0)

---
updated-dependencies:
- dependency-name: structlog
  dependency-version: 25.3.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

tools/requirements.txt

@@ -2,5 +2,5 @@ aiohttp==3.11.18
 async-timeout==4.0.3
 pytz==2025.2
 sentry-sdk==1.16.0
-structlog==24.4.0
+structlog==25.3.0
 taskcluster==84.0.2