chore: parallel compile fix

packages/leann-backend-diskann/pyproject.toml

@@ -15,4 +15,5 @@ wheel.packages = ["leann_backend_diskann"]
 # 使用默认的 redirect 模式
 editable.mode = "redirect"
 cmake.build-type = "Release"
-build.verbose = true
+build.verbose = true
+cmake.build-args = ["-j"]

packages/leann-backend-hnsw/pyproject.toml

@@ -14,4 +14,5 @@ dependencies = ["leann-core==0.1.0", "numpy"]
 wheel.packages = ["leann_backend_hnsw"]
 editable.mode = "redirect"
 cmake.build-type = "Release"
-build.verbose = true
+build.verbose = true
+cmake.build-args = ["-j"]