Update dependency ruff to v0.6.0

requirements.txt

@@ -23,7 +23,7 @@ ptyprocess==0.7.0
 pure-eval==0.2.2
 Pygments==2.18.0
 pytest==7.3.1
-ruff==0.0.270
+ruff==0.6.0
 six==1.16.0
 stack-data==0.6.2
 traitlets==5.9.0