pip: bump the pip-updates group across 1 directory with 3 updates (#246)

Updates the requirements on [kopf](https://github.com/nolar/kopf), [ruff](https://github.com/astral-sh/ruff) and [black](https://github.com/psf/black) to permit the latest version.

Updates `kopf` from 1.38.0 to 1.39.0
- [Release notes](https://github.com/nolar/kopf/releases)
- [Commits](nolar/kopf@1.38.0...1.39.0)

Updates `ruff` to 0.14.8
- [Release notes](https://github.com/astral-sh/ruff/releases)
- [Changelog](https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md)
- [Commits](astral-sh/ruff@0.14.7...0.14.8)

Updates `black` to 25.12.0
- [Release notes](https://github.com/psf/black/releases)
- [Changelog](https://github.com/psf/black/blob/main/CHANGES.md)
- [Commits](psf/black@25.11.0...25.12.0)

---
updated-dependencies:
- dependency-name: kopf
  dependency-version: 1.39.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: pip-updates
- dependency-name: ruff
  dependency-version: 0.14.8
  dependency-type: direct:production
  dependency-group: pip-updates
- dependency-name: black
  dependency-version: 25.12.0
  dependency-type: direct:production
  dependency-group: pip-updates
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

requirements.txt

@@ -14,7 +14,7 @@ httpcore==1.0.9
 httpx==0.28.1
 idna==3.11
 iso8601==2.1.0
-kopf==1.38.0
+kopf==1.39.0
 multidict==6.7.0
 propcache==0.4.1
 python-json-logger==4.0.0

test-requirements.txt

@@ -1,8 +1,8 @@
-ruff~=0.14.7
+ruff~=0.14.8
 coverage>=4.0,!=4.4 # Apache-2.0
 stestr>=4.2.0 # Apache-2.0
 codespell
 types-PyYAML
 types-setuptools
 mypy
-black~=25.11.0
+black~=25.12.0