deps(python): bump the pip group across 1 directory with 2 updates

Bumps the pip group with 2 updates in the /dependencies/python directory: [ruff](https://github.com/astral-sh/ruff) and [zizmor](https://github.com/zizmorcore/zizmor).


Updates `ruff` from 0.15.17 to 0.15.18
- [Release notes](https://github.com/astral-sh/ruff/releases)
- [Changelog](https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md)
- [Commits](astral-sh/ruff@0.15.17...0.15.18)

Updates `zizmor` from 1.25.2 to 1.26.1
- [Release notes](https://github.com/zizmorcore/zizmor/releases)
- [Changelog](https://github.com/zizmorcore/zizmor/blob/main/docs/release-notes.md)
- [Commits](zizmorcore/zizmor@v1.25.2...v1.26.1)

---
updated-dependencies:
- dependency-name: ruff
  dependency-version: 0.15.18
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: pip
- dependency-name: zizmor
  dependency-version: 1.26.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: pip
...

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

Author: dependabot[bot]

dependencies/python/ruff.txt

@@ -1 +1 @@
-ruff==0.15.17
+ruff==0.15.18

dependencies/python/zizmor.txt

@@ -1 +1 @@
-zizmor==1.25.2
+zizmor==1.26.1