Update duckdb index files

.gitattributes

@@ -72,3 +72,4 @@ Advection_Sols_beta0.1/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 Advection_Sols_beta2.0/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 Advection_Sols_beta4.0/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 Advection_Sols_beta7.0/dev/index.duckdb filter=lfs diff=lfs merge=lfs -text
+Advection_Sols_beta7.0/test/index.duckdb filter=lfs diff=lfs merge=lfs -text

Advection_Sols_beta7.0/test/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:84d9fd41ff9348f7eee3057a9143d9294c7d35724d4be658d3038bfdc5dc04b5
+size 27799552