feat: py-onnx-1.15.0

Split off from !789 (closed).

spack-environment/packages.yaml

@@ -278,7 +278,7 @@ packages:
     - '@1.16-33-g3788bb4'
   py-numpy:
     require:
-    - '@1.26.1'
+    - '@1.25.2'
   py-onnx:
     require:
     - '@1.13.1'
@@ -287,7 +287,7 @@ packages:
     - '@1.5.3'
   py-pip:
     require:
-    - '@23.1.2'
+    - '@23.0'
   py-pre-commit:
     require:
     - '@2.20.0'