Fix SQLAlchemy version format in requirements.txt (Comfy-Org#13547)

Change SQLAlchemy>=2.0 to SQLAlchemy>=2.0.0 to satisfy the X.Y.Z
version format expected by install_util.is_valid_version().

Author: Kosinkadink

requirements.txt

@@ -19,7 +19,7 @@ scipy
 tqdm
 psutil
 alembic
-SQLAlchemy>=2.0
+SQLAlchemy>=2.0.0
 filelock
 av>=14.2.0
 comfy-kitchen>=0.2.8