Update duckdb index files

.gitattributes

@@ -69,3 +69,4 @@ Advection_Sols_beta2.0/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 Advection_Sols_beta4.0/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 Advection_Sols_beta4.0/dev/index.duckdb filter=lfs diff=lfs merge=lfs -text
 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_beta2.0/test/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:04da7c3540e978cdb45ae9ab1b50f33c4ccd37faca6144cc98b73159918d851b
+size 27799552