Update duckdb index files

.gitattributes

@@ -106,3 +106,4 @@ perl6/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 purescript/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 sqf/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 solidity/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+ragel-in-ruby-host/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

ragel-in-ruby-host/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:37305707c91bf9d8c1e7dd2c3d396822073e42a9525a537196a2423c602e22cf
+size 1060864