Update dependency lxml to v6.0.4

Author: rultor

pyproject.toml

@@ -19,7 +19,7 @@ dependencies = [
   "deprecated==1.3.1",
   "html5lib==1.1",
   "javalang==0.13.0",
-  "lxml==6.0.3",
+  "lxml==6.0.4",
   "matplotlib==3.10.8",
   "networkx==3.6.1",          # Updated to be compatible with NumPy 2.0+
   "numpy==2.4.4",