2.0.30-rc2

Second release candidate of the 2.0.30 Release.

What's Changed

• Imported new Sik uploader from https://github.com/ArduPilot/SiK by @Arne-W in #1263
• Vagrant: use focal, Qt deps to 5.15.2, use install-qt by @peterbarker in #1267
• Request AUTOPILOT_VERSION using MAV_CMD_REQUEST_MESSAGE by @peterbarker in #1268
• Update mavlink version by @andyp1per in #1266
• Build: Updated to QCustomPlot 2.1.0 by @Arne-W
• Build: Support building with Qt 5.15 by @Arne-W
• Some cleanup by @Arne-W in #1269
• Minor cleanup and suppress terrain request log entries by @Arne-W in #1272
• build: update release_notes for 2.0.30-RC2 by @Arne-W in #1274

New Contributors

• @andyp1per made their first contribution in #1266

Full Changelog: 2.0.30-rc1...2.0.30-rc2