Bump ruff from 0.5.5 to 0.5.6

Pipfile

@@ -14,7 +14,7 @@ towncrier = "==24.7.1"
 black = "==24.4.2"
 pytest-cov = "==5.0.0"
 pytest-xdist = "==3.6.1"
-ruff = "==0.5.5"
+ruff = "==0.5.6"
 mypy = "==1.11.1"
 tbump = "==6.11.0"
 rstcheck = {version = "==6.2.4", extras = ["sphinx"]}