Update py2hwsw version

[arturum1]

New version of Py2HWSW includes the iob_system_linux parent module with a new root filesystem.
The new rootfs contains a pre-compiled version of the new auto-generated iob_timer kernel module driver with support for three kernel-user space interfaces: sysfs, dev, and ioctl.
It also includes three pre-compiled user-space programs to test each interface of the iob_timer driver.

The new Py2HWSW version includes changes up to commit: https://github.com/arturum1/py2hwsw/tree/63d81d8a0b6cd97755a652617bb71e4f644ad3eb

Please create tag M2.b after merging this PR

[Copilot]

Pull request overview

This PR updates the py2hwsw framework dependency to version 63d81d8a0b6cd97755a652617bb71e4f644ad3eb, which introduces significant enhancements to the Linux system capabilities. The new version includes the iob_system_linux parent module with an updated root filesystem containing pre-compiled iob_timer kernel module drivers and test programs supporting three kernel-user space interfaces (sysfs, dev, and ioctl).

• Updated py2hwsw commit hash to point to the new version with enhanced Linux support
• Updated SHA256 hash to maintain Nix package integrity verification

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