MLBEDSW-7203: Data type alias deprecations

Deprecation of some data type aliases in NumPy version 1.24.0 caused Vela
to crash when using Python version 3.8 or above. Replaced the deprecated
aliases.

Signed-off-by: Rickard Bolin <rickard.bolin@arm.com>
Change-Id: Ide167ee864a340194ec5e69537c8718192c78ace
diff --git a/ethosu/vela/tosa_mapping.py b/ethosu/vela/tosa_mapping.py
index 87819d6..97fdd20 100644
--- a/ethosu/vela/tosa_mapping.py
+++ b/ethosu/vela/tosa_mapping.py
@@ -58,7 +58,7 @@
 }
 
 datatype_map_numpy = {
-    DType.BOOL: np.bool,
+    DType.BOOL: bool,
     DType.UINT8: np.uint8,
     DType.INT8: np.int8,
     DType.INT16: np.int16,