Update parquet files

Francesco--brain-tumor-m2pbp/parquet-test.parquet

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+size 40494954

Francesco--brain-tumor-m2pbp/parquet-train.parquet

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
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+size 141749383

Francesco--brain-tumor-m2pbp/parquet-validation.parquet

@@ -1,3 +1,3 @@
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