Update submodule simulation-ignition to latest Sun Dec 5 12:38:56 UTC 2021

- simulation-ignition in PX4/Firmware (4e3d944f58): 0ea4dbe2c3
    - simulation-ignition current upstream: 483193d9b8
    - Changes: 0ea4dbe2c3...483193d9b8

    483193d 2021-11-27 JaeyoungLim - Merge pull request #2 from PX4/pr-upstream-merge
4f3fd67 2021-11-27 Jaeyoung-Lim - Merge remote-tracking branch 'origin/master' into pr-upstream-merge
bd96d89 2021-11-27 Jaeyoung-Lim - Use mavlink develop dialect
bba86d6 2021-11-27 Jaeyoung-Lim - Fix firmware build test on github actions
e78ad94 2021-09-04 Jaeyoung-Lim - Update Readme
63ac33c 2021-09-03 Jaeyoung-Lim - Rename world path to accomodate different models
794a8dc 2021-07-12 Jaeyoung-Lim - Add ignition gazebo firmware build test

Tools/simulation-ignition

@@ -1 +1 @@
-Subproject commit 0ea4dbe2c3dac84f5927a59b1caf5e5561cf942e
+Subproject commit 483193d9b8b89211c3b970c735b4fbb5f724b63a