Use bls.use_fastest() in default testgen

Author: hwwhww

tests/core/pyspec/eth2spec/gen_helpers/gen_from_tests/gen.py

@@ -77,7 +77,7 @@ def get_provider(create_provider_fn: Callable[[SpecForkName, PresetBaseName, str
 
 def get_create_provider_fn(runner_name: str) -> Callable[[SpecForkName, str, str, PresetBaseName], TestProvider]:
     def prepare_fn() -> None:
-        bls.use_milagro()
+        bls.use_fastest()
         return
 
     def create_provider(fork_name: SpecForkName, preset_name: PresetBaseName,

tests/core/pyspec/eth2spec/test/eip7594/merkle_proof/test_single_merkle_proof.py

@@ -22,7 +22,7 @@
 
 
 def _run_blob_kzg_commitments_merkle_proof_test(spec, state, rng=None):
-    opaque_tx, blobs, blob_kzg_commitments, proofs = get_sample_opaque_tx(spec, blob_count=1)
+    opaque_tx, blobs, blob_kzg_commitments, _ = get_sample_opaque_tx(spec, blob_count=1)
     if rng is None:
         block = build_empty_block_for_next_slot(spec, state)
     else: