Replace BM25 pickle with gzipped JSON (bm25_index_all_sources.json.gz): safe to load, no false-positive malware flags

chroma-db-all_sources/{bm25_index_all_sources.pkl → bm25_index_all_sources.json.gz}

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:e5c4cedbb9632aa7a407e2a74cc363a0821bdb01bc628d8c08e9db70efd1b5f4
-size 52396960
+oid sha256:fffc660ebf132b16ebc69461dfd0e5398d1b3fcb761dda19c1db7a1db6692018
+size 15797580