Update parquet files

casual--national_speech_corpusv2/{parquet-train.parquet → train/0000.parquet}

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:383732be581a1d64396ba2d0927df08af8a726fd785879c7710eb67166b2b53b
-size 557086727
+oid sha256:4c2558819a94643068a15e7e32b1abb636a48bfb8fefa63e3f3e544691f693a0
+size 267468068

casual--national_speech_corpusv2/train/0001.parquet

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:94ac38fb5d3005b04718f4432f900d06d07383d126f02cdb6a8b6e575fb0d8f3
+size 289992304