pip: bump pipdeptree from 2.7.0 to 2.7.1

Bumps [pipdeptree](https://github.com/tox-dev/pipdeptree) from 2.7.0 to 2.7.1.
- [Release notes](https://github.com/tox-dev/pipdeptree/releases)
- [Changelog](https://github.com/tox-dev/pipdeptree/blob/main/CHANGES.md)
- [Commits](tox-dev/pipdeptree@2.7.0...2.7.1)

---
updated-dependencies:
- dependency-name: pipdeptree
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

requirements.txt

@@ -9,7 +9,7 @@ imagesize==1.4.1
 Jinja2==3.1.2
 MarkupSafe==2.1.2
 packaging==23.1
-pipdeptree==2.7.0
+pipdeptree==2.7.1
 polib==1.2.0
 pomerge==0.1.4
 pospell==1.1