Update duckdb index files

.gitattributes

@@ -81,3 +81,4 @@ es_opeosakivarios/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 es_osakidetza1c/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 es_osakidetza2c/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 es_osakidetza3c/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
+es_osakidetza4c/test/index.duckdb filter=lfs diff=lfs merge=lfs -text

es_osakidetza4c/test/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d81bcd757f95d2b07e50038e56529d9724df77ae9290657ed40c12e85d18d842
+size 1060864