Zephyr: Bump cmake dependency (#18634)

Updated the cmake dependecy v3.29 -> v<4.0.0,
this is due to PyPI not finding 3.29 anymore

cc @digantdesai @freddan80 @per @zingo @oscarandersson8218 @mansnils
@Sebastian-Larsson @robell

Signed-off-by: Christoffer J.L <christoffer.johanssonlundqvist@arm.com>
Co-authored-by: Christoffer Johansson Lundqvist <119742508+Christoffer-JL@users.noreply.github.com>

Author: pytorchbot

zephyr/README.md

@@ -17,7 +17,7 @@ source .zephyr_venv/bin/activate
 Install requirements
 <!-- RUN install_reqs -->
 ```
-pip install west cmake==3.29 pyelftools ninja jsonschema
+pip install west "cmake<4.0.0" pyelftools ninja jsonschema
 ```
 
 Setup zephyr repo