Bump psf/black from 26.3.0 to 26.3.1 (infra) (#2388)

Bump psf/black from 26.3.0 to 26.3.1

Bumps [psf/black](https://github.com/psf/black) from 26.3.0 to 26.3.1.
- [Release notes](https://github.com/psf/black/releases)
- [Changelog](https://github.com/psf/black/blob/main/CHANGES.md)
- [Commits](psf/black@35ea679...c6755bb)

---
updated-dependencies:
- dependency-name: psf/black
  dependency-version: 26.3.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

.github/workflows/black.yml

@@ -15,6 +15,6 @@ jobs:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
         with:
           persist-credentials: false
-      - uses: psf/black@35ea67920b7f6ac8e09be1c47278752b1e827f76
+      - uses: psf/black@c6755bb741b6481d6b3d3bb563c83fa060db96c9
         with:
           options: "--check --diff --line-length 79 --extend-exclude '/vendor/'"