Update parquet files

dojo--newsgroups/parquet-training.parquet

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:8a0e32339fd3d0cf8d89825d1947a679e8be9ecdab10891c9e722158ac2e11cc
-size 8963226
+oid sha256:149fe84880f5bd7e3b92b61e78fe667658c7fd3399e7d81ad283b8327a910267
+size 8942756

dojo--newsgroups/parquet-validation.parquet

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:25185786f9d6d49a31691575b7668aa39ea0a9b87fb374f5e903580649a5ec15
-size 5503442
+oid sha256:dc6de620cb8c387be97342948022ed29bc4ce921cf0b4826f0db010642b70103
+size 5459009