Update duckdb index files

.gitattributes

@@ -306,3 +306,4 @@ turtle/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 twig/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 smarty/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 systemverilog/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
+parrot-internal-representation/test/index.duckdb filter=lfs diff=lfs merge=lfs -text

parrot-internal-representation/test/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1250e90a63a3326a5a2607b47ae1b61b30f5a7f36ce0ac8f4687a2cf68dbe68b
+size 1060864