Update duckdb index files

.gitattributes

@@ -79,3 +79,4 @@ selfapr-vul4j-out/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 sequencer-quixbugs-in/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 sequencer-quixbugs-out/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 recoder-corpus-in/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+cvefixes-corpus-in/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

cvefixes-corpus-in/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b65a1032dac26dc23be4f1f681c8d757010f250b73918f4bad0bbab5802362b5
+size 412102656