Bump akaihola/darker from 1.7.3 to 2.0.0 (#2833)

Bumps [akaihola/darker](https://github.com/akaihola/darker) from 1.7.3 to 2.0.0.
- [Release notes](https://github.com/akaihola/darker/releases)
- [Changelog](https://github.com/akaihola/darker/blob/master/CHANGES.rst)
- [Commits](akaihola/darker@1.7.3...v2.0.0)

---
updated-dependencies:
- dependency-name: akaihola/darker
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/static-code-analysis.yml

@@ -14,7 +14,7 @@ jobs:
       - uses: actions/checkout@v4
         with:
           fetch-depth: '0'
-      - uses: akaihola/darker@1.7.3
+      - uses: akaihola/darker@v2.0.0
         with:
           options: "--check --diff --revision=origin/main..."
           src: "."