devel/py-mpremote: update v1.28.0 -> v1.29.0

Changelog: https://github.com/micropython/micropython/releases/tag/v1.29.0

Major changes:

• fix length calculation in RemoteCommand for arrays
• add tests for array readinto and write
• add an alias for codeberg repos
• add PTY device detection for QEMU
• fix fs_stat exception with namedtuples
• fix instructions for running single test
• properly escape quotes for commands
• fix command expansion to handle =
• fix UnicodeEncodeError on Windows consoles
• convert string input to bytes in wr_bytes method
• tests: add -t device and skip functionality
• tests: use a shared ramdisk script across tests
• tests: add test for unicode fixes
• implement incremental preparation for romfs deploy