Update submodule mavlink to latest Thu Aug 14 12:39:27 UTC 2025

    - mavlink in PX4/Firmware (4acabda): mavlink/mavlink@b27d03b
    - mavlink current upstream: mavlink/mavlink@f9dbd8c
    - Changes: mavlink/mavlink@b27d03b...f9dbd8c

    f9dbd8c4 2025-08-14 Julian Oes - C example fixup (#2333)
e261db27 2025-08-14 Nick E - common.xml: Add COASTING flag to CAMERA_TRACKING_STATUS_FLAGS (#2326)
4f0efaaa 2025-08-14 Nick E - common.xml: Add "Power On" action to MAV_CMD_PREFLIGHT_REBOOT_SHUTDOWN command (#2329)
6a98757c 2025-08-14 vlad-serbanica - Add new component IDs for multiple radios (#2327)
2ca0cb55 2025-08-14 Nick E - common.xml: Add commands, capability and flag for Moving Target Indicators (MTI) (#2323)
115f1c83 2025-08-14 Christian Clauss - Typos: Run codespell on all files (#2328)

Author: PX4BuildBot