nearest test failure

[kn0sys]

embeddings no longer work with nearest neighbor query.

Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
     Running unittests src/lib.rs (target/debug/deps/valentinus-2d5ee4355b97714b)

running 1 test
test embeddings::tests::nearest_test ... FAILED

failures:

---- embeddings::tests::nearest_test stdout ----
Error: NearestError


failures:
    embeddings::tests::nearest_test

test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 2 filtered out; finished in 0.30s

error: test failed, to rerun pass `--lib`

[kn0sys]

revert models to https://huggingface.co/sentence-transformers/all-MiniLM-L6-v2/tree/8b3219a92973c328a8e22fadcfa821b5dc75636a