Update duckdb index files

.gitattributes

@@ -105,3 +105,4 @@ default/sst2_perturbed_typos_0.05/index.duckdb filter=lfs diff=lfs merge=lfs -te
 default/sst2_perturbed_typos_0.1/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/sst2_perturbed_swapnum/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/sst2_perturbed_verbtense/index.duckdb filter=lfs diff=lfs merge=lfs -text
+default/sst2_perturbed_twitter/index.duckdb filter=lfs diff=lfs merge=lfs -text

default/sst2_perturbed_twitter/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4a26eadb8080e6b437a4f1b3eb84510358c645fc2b830c07bb7d2572d6df1597
+size 1323008