Update parquet files

poisson_grid64/test/0000.parquet

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:3ccbb29337c2d6ff3bceb1708dd07cd55902f821633cb81f7f86394debe720a4
-size 13109350
+oid sha256:48bc95e55dd2b2eb1f2dd79d815395a143710b785141d7840b304e8a55f1e1cc
+size 634

poisson_grid64/train/0000.parquet

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:21fc100213632523edf5bbe56f889cd517a8801f3021fe7fdc980b441ad914c1
-size 65540555
+oid sha256:48bc95e55dd2b2eb1f2dd79d815395a143710b785141d7840b304e8a55f1e1cc
+size 634