Update submodule mavlink to latest Fri Mar 7 01:19:11 UTC 2025

    - mavlink in PX4/Firmware (fbc5aac): mavlink/mavlink@8690e10
    - mavlink current upstream: mavlink/mavlink@a22e70f
    - Changes: mavlink/mavlink@8690e10...a22e70f

    a22e70ff 2025-03-06 Hamish Willee - common.xml - Fix typo in DEBUG_FLOAT_ARRAY (#2236)
1639bee5 2025-03-06 Hamish Willee - MAV_CMD_DO_LAND_START clarifications (#2203)
f194684a 2025-03-05 Peter Barker - uavionix: add ping200x status and control messages (#2237)
ed44c5ec 2025-03-05 Hamish Willee - common.xml - remove display="bitmask" (#2215)
c2d58f94 2025-03-05 Hamish Willee - Update fetch_dialect_ardupilotmega.yml - base not target (#2235)
b11123af 2025-03-05 Hamish Willee - Update fetch_dialect_ardupilotmega.yml (#2234)
b783b45b 2025-03-05 Hamish Willee - fetch_dialect_ardupilotmega.yml - attempt to fix file modification checking code (#2233)
abb30899 2025-03-05 Hamish Willee - Attempt better change logging (#2232)
2c3daaca 2025-03-05 Hamish Willee - fetch_dialect_ardupilotmega.yml - modify to fetch changes as commits (#2231)
cb1b07bb 2025-03-05 Hamish Willee - fetch_dialect_ardupilotmega.yml to include all included dialects (#2229)
d08a84aa 2025-03-03 co63oc - Fix typos in doc and message_definitions (#2226)
cac32216 2025-02-27 Hamish Willee - MAV_MODE_PROPERTY for auto/manual distinquishing (#2223)
cc537da7 2025-02-27 Hamish Willee - MAV_CMD_NAV_FENCE_POLYGON_VERTEX_ - numbering info (#2222)