Update duckdb index files

.gitattributes

@@ -71,3 +71,4 @@ selfapr-corpus-defects4j-Lang-in/partial-train/index.duckdb filter=lfs diff=lfs
 selfapr-corpus-defects4j-Mockito-in/partial-train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 selfapr-corpus-defects4j-Math-in/partial-train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 selfapr-corpus-defects4j-Closure-in/partial-train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+selfapr-corpus-defects4j-Chart-in/partial-train/index.duckdb filter=lfs diff=lfs merge=lfs -text

selfapr-corpus-defects4j-Chart-in/partial-train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6bfc1ba1d618775edeb35ed059e20c6478fa13ce67ecd4c401af467ae7c4c2f6
+size 3472896000