Fix keepdims type in fuse mhsa pass

Author: lukamac

Deeploy/Targets/MemPool/TopologyOptimizationPasses/Passes.py

@@ -289,7 +289,7 @@ def get_constant_input_or_zeros(n: gs.Node, shape):
                     name = name + "_sum",
                     attrs = {
                         'axes': [1],
-                        "keepdims": "0"
+                        "keepdims": 0
                     })
 
         mhsa_out[0].shape = [_output.shape[0]] + [int(H)] + _output.shape[1:]