Update duckdb index files

.gitattributes

@@ -161,3 +161,4 @@ body_conducted.forehead.miniature_accelerometer/test.quiet_in_silence/index.duck
 body_conducted.forehead.miniature_accelerometer/train.quiet_in_noise/index.duckdb filter=lfs diff=lfs merge=lfs -text
 body_conducted.forehead.miniature_accelerometer/validation.quiet_in_noise/index.duckdb filter=lfs diff=lfs merge=lfs -text
 body_conducted.forehead.miniature_accelerometer/test.quiet_in_noise/index.duckdb filter=lfs diff=lfs merge=lfs -text
+airborne.mouth_headworn.reference_microphone/test.quiet_in_silence/index.duckdb filter=lfs diff=lfs merge=lfs -text

airborne.mouth_headworn.reference_microphone/test.quiet_in_silence/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c71c400e851209eef479241777aab20562d40f638c24765755c681107c25e8c9
+size 156774400