Meshtastic Python 2.6.4

This will be the last 2.6 release of the library and CLI; 2.7.0 should come soon, with updated protobufs, but the prior release of this project had fairly outdated protobufs, so this brings them to current for the 2.6 series.

What's Changed

• Fix --configure by adding delays after sections by @pdxlocations in #783
• fix(util): update waitForTraceRoute reset logic by @grleblanc in #785
• Add a sendMqttClientProxyMessage helper for client proxy implementation by @ianmcorvidae in #790
• Add validation/prevent --set-owner, --set-owner-short, and --set-ham … by @Crank-Git in #782
• protobufs updated to v2.6.12

New Contributors

• @grleblanc made their first contribution in #785
• @Crank-Git made their first contribution in #782

Full Changelog: 2.6.3...2.6.4