Update submodule mavlink to latest Tue Dec 3 00:38:38 UTC 2024

    - mavlink in PX4/Firmware (7a45815): mavlink/mavlink@0e42010
    - mavlink current upstream: mavlink/mavlink@49fa509
    - Changes: mavlink/mavlink@0e42010...49fa509

    49fa509a 2024-11-30 github-actions[bot] - ardupilotmega dialects from ArduPilot/mavlink: Fri Nov 29 23:49:36 UTC 2024 (#2185)
75ebfc8f 2024-11-30 Hamish Willee - Update fetch_dialect_ardupilotmega.yml - fix copy error (#2184)
8e97709d 2024-11-30 Hamish Willee - fetch_dialect_ardupilotmega.yml - add loweheiser (#2183)
82b81aa8 2024-11-27 github-actions[bot] - ardupilotmega.xml from ArduPilot/mavlink: Wed Nov 27 04:13:16 UTC 2024 (#2178)
5c421a33 2024-11-27 Hamish Willee - Speed uncertainty units /s (#2180)
33f8a327 2024-11-24 David Sastre - Some modifications to multi-GCS protocol (#2179)
9938f940 2024-11-21 Hamish Willee - fetch_dialect_ardupilotmega - create (#2177)
a55d0ec5 2024-11-21 Hamish Willee - MAV_CMD_GROUP_START and _GROUP_END delete wip (#2176)
1cf3c721 2024-11-21 Hamish Willee - dev: move FUEL_STATUS to common (#2170)
7ecb8e33 2024-11-21 Hamish Willee - WIFI_NETWORK_SECURITY - wip removal (#2164)