Update duckdb index files

.gitattributes

@@ -52,3 +52,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.jpg filter=lfs diff=lfs merge=lfs -text
 *.jpeg filter=lfs diff=lfs merge=lfs -text
 *.webp filter=lfs diff=lfs merge=lfs -text
+raygx--NepCov19Tweets/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

raygx--NepCov19Tweets/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0fb5c6900b328466c8fff45ed7cb8bf490a202457878fe50236d166f7132061f
+size 4730880