HPCC-22626 Update lz4 submodule to v1.9.1 Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>
@@ -1 +1 @@
-Subproject commit d86dc916771c126afb797637dda9f6421c0cb998
+Subproject commit 398e36c756a3067de8e2b35dd380baef040dfe0d