Update duckdb index files

.gitattributes

@@ -77,3 +77,4 @@ Gutenberg[[:space:]](PG-19)/partial-test/index.duckdb filter=lfs diff=lfs merge=
 HackerNews/partial-test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 OpenSubtitles/partial-test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 PubMed[[:space:]]Abstracts/partial-test/index.duckdb filter=lfs diff=lfs merge=lfs -text
+StackExchange/partial-test/index.duckdb filter=lfs diff=lfs merge=lfs -text

StackExchange/partial-test/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:bcb84c942b8a8bd217de7d466005805e15cabd23dc01cae4e1bb5d678c881240
+size 3976212480