Update submodule libcanard to latest Sun Dec 29 00:38:52 UTC 2024

    - libcanard in PX4/Firmware (81552fc): OpenCyphal/libcanard@5c69d45
    - libcanard current upstream: OpenCyphal/libcanard@03fc5fe
    - Changes: OpenCyphal/libcanard@5c69d45...03fc5fe

    03fc5fe 2024-09-24 Sergei - Fix for the "Improve RPC Client Response RX pipeline" issue # 228 (#231)
551af7f 2024-09-18 Marcin Anforowicz - ESP-IDF Component Continuous Integration (#229)
00f9d5c 2024-05-06 Sergei - Extend api with canardRxGetSubscription (#224)
1c4da0d 2023-12-26 Yurii Cherniavskyi - Introduce internal includes section to avoid potential implicit declaration warnings (#219)
73d0a9c 2023-04-30 Pavel Kirienko - Refactor the transfer reassembly state machine to enhance its maintainability and robustness (#215)
69ed329 2023-04-22 Pavel Kirienko - Amend the transfer reassembly state machine and prepare v3.1 release (#213)
19c26e6 2023-04-17 Pavel Kirienko - Fix 189, 196, 206 (#211)
8ce8ed2 2023-04-14 Pavel Kirienko - Update the tools to the latest versions and add new static analysis diagnostics (#210)