[python] Add lz4 dependency

Add lz4 to the python dependencies.

Signed-off-by: Siemen Dhooghe <sdhooghe@google.com>

Author: siemen11

pyproject.toml

@@ -24,6 +24,7 @@ dependencies = [
   "libclang==16.0.0",
   "libcst == 1.1.0", # 1.2.0+ needs Python 3.9+
   "lxml ~= 5.0",
+  "lz4 == 4.4.5",
   "mako==1.1.6",
   "pluralizer==1.2.0",
   "pycryptodome==3.15.0",