Update duckdb index files

.gitattributes

@@ -186,3 +186,4 @@ tatoeba.mal/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 tatoeba.mar/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 tatoeba.nld/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 tatoeba.pes/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
+tatoeba.por/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

tatoeba.por/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:87606b44055e477fa68e3f1a205e7cb8b7c856c7df9631962ff1b7763eece2fe
+size 1060864