v1.8.1 Release - RS41 Multi-GNSS Support, ka9q-radio updates

[darksidelemm]

(Notes for release info)

Important: We recommend all users update to this version to ensure the latest Vaisala RS41 telemetry formats can be received.

This release brings the following major changes:

• RS41: Support for the new 'multi-GNSS' telemetry format that has been observed on very new RS41 models. We highly recommend everyone update to 1.8.1 to ensure these newer RS41s are received correctly. Thanks to @rs1729 for quickly adding support for this new format!
  • This new telemetry format has only been seen on 'X' prefix RS41s (RSM425 PCB, 02.07.01 software version), but note that it is only used if a Vaisala MW51 ground station is used. We may see X-prefix RS41s not using this new telemetry format.
• M20: Updates to decoder to support some rarer serial number formats.
• Scanning & Detection: Detection bandwidth narrowed to 15 kHz to better handle adjacent-channel interference.
• RS41: Narrow frequency estimator bandwidth to +/- 5 kHz, and use a 4800 Hz mask estimator for improved decode performance.
• DFM: Narrow frequency estimator bandwidth to +/- 5 kHz for improved decode performance.
• SDR Handling general: Increase SDR 'test' timeout to 20 seconds, to work around some slowness with spyserver and ka9q-radio testing scripts.
• ka9q-radio: Updates and fixes to ka9q-radio support. Users will need to update to the latest recommended ka9q-radio commit, as described here, otherwise decoding will not work.
• Docker builds: Various fixes and improvements to docker builds (qemu issues, arm64 runners) - Thanks @snh !
• Web Interface: Various tweaks and improvements to the web interface layout - Thanks @ke5gdb and @argilo !