Update duckdb index files

.gitattributes

@@ -90,3 +90,4 @@ mbpp-js/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 mbpp-js-keep/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 mbpp-lua/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 mbpp-lua-keep/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
+mbpp-php/test/index.duckdb filter=lfs diff=lfs merge=lfs -text

mbpp-php/test/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f80cf5956072ce9585c64e1bf9b52203d1bca80975d1ffd4537f8cb0ca79df01
+size 1323008