Update duckdb index files

.gitattributes

@@ -59,3 +59,4 @@ default/ptsd/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/bipolar/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/alcohol_consumption/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/eating_disorders/index.duckdb filter=lfs diff=lfs merge=lfs -text
+default/substance_misuse/index.duckdb filter=lfs diff=lfs merge=lfs -text

default/substance_misuse/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f34c44071d865625aade31045026ba80a323f5d494b515902796c9a61e7490cd
+size 3682304