Merge pull request mavlink#494 from mavlink/pr-bump-v1.4.4

Bump MAVSDK version to v1.4.4

Merge pull request mavlink#485 from mavlink/update-to-mavsdk-server-1…

….4.2

Bump mavsdk_server to 1.4.3

Merge pull request mavlink#475 from mavlink/pr-update-mavsdk-proto

Update top MAVSDK v1.3.1

Merge pull request mavlink#462 from mavlink/pr-update-to-v1.2.0

Update proto and mavsdk_server to v1.2.0

Merge pull request mavlink#455 from mavlink/pr-update

Update to latest proto and server

Merge pull request mavlink#443 from TSC21/enable_server_plugins

Enable server plugins

Merge pull request mavlink#426 from mavlink/pr-fix-formatting-again

docs: another try to fix formatting

Merge pull request mavlink#425 from mavlink/pr-fix-formatting

docs: fix formatting

Merge pull request mavlink#424 from mavlink/pr-debug-help

docs: add note how to debug concection issues

Merge pull request mavlink#408 from mavlink/pr-update-proto-mavsdk-se…

…rver

Update mavsdk_server and proto submodule