Update duckdb index files

.gitattributes

@@ -56,3 +56,4 @@ justram--AToMiC-Images-v0.2-medium/test/index.duckdb filter=lfs diff=lfs merge=l
 justram--AToMiC-Images-v0.2-medium/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
+default/train/partial-index.duckdb filter=lfs diff=lfs merge=lfs -text

default/train/partial-index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:912cd065c76b715a6581ac9b3c2e4b04ed181b4e5063c5700ad50b899e6dfbda
+size 5763510272