Support Python 3.10 checksum verification

tiny_english/artifacts.py

@@ -2,6 +2,9 @@ import hashlib
 from pathlib import Path
 
 
-def digest_file(path):
-    with Path(path).open("rb") as handle:
-        return hashlib.file_digest(handle, "sha256").hexdigest()
+def digest_file(path):
+    digest = hashlib.sha256()
+    with Path(path).open("rb") as handle:
+        for chunk in iter(lambda: handle.read(1024 * 1024), b""):
+            digest.update(chunk)
+    return digest.hexdigest()