Update duckdb index files

.gitattributes

@@ -1,2 +1,3 @@
 HuggingFaceM4--tmp-pmd-synthetic-testing/parquet-100.unique.parquet filter=lfs diff=lfs merge=lfs -text
 HuggingFaceM4--tmp-pmd-synthetic-testing/parquet-300.unique.parquet filter=lfs diff=lfs merge=lfs -text
+HuggingFaceM4--tmp-pmd-synthetic-testing/100.unique/index.duckdb filter=lfs diff=lfs merge=lfs -text

HuggingFaceM4--tmp-pmd-synthetic-testing/100.unique/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:91aea277c2b14c5e49881d68280488c660746899f0817ba7a1e6c561a24c02b0
+size 5255168