Bump black from 26.1.0 to 26.3.1 (#517)

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

Author: dependabot[bot]

poetry.lock

@@ -28,7 +28,7 @@ gitlab = ["python-gitlab"]
 poetry-plugin-export = ">=1.8"
 
 [tool.poetry.group.dev.dependencies]
-black = "^26.1"
+black = "^26.3"
 boto3 = "^1.42.44"
 flake8 = "^7"
 mypy = "^1.19"