chore(deps): update mqttastic to v0.3.8

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
org.meshtastic:mqtt-client	0.3.6 → 0.3.8

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Release Notes

meshtastic/MQTTastic-Client-KMP (org.meshtastic:mqtt-client)

v0.3.8

What's Changed

• build: hold Kotlin at 2.3.21 so consumers on 2.3.x can read our klibs by @​jamesarich in #​55

Full Changelog: meshtastic/MQTTastic-Client-KMP@v0.3.7...v0.3.8

v0.3.7

What's Changed

• chore(build): enable automatic release for Maven Central by @​jamesarich in #​47
• chore(build): derive version from git tags by @​jamesarich in #​48
• Migrate Renovate config by @​renovate[bot] in #​49
• Update dependency macos to v26 by @​renovate[bot] in #​45
• Update Build tools by @​renovate[bot] in #​43
• Update Gradle to v9.5.1 by @​renovate[bot] in #​44
• Update Compose ecosystem by @​renovate[bot] in #​42
• Update plugin com.gradle.develocity to v4.4.2 by @​renovate[bot] in #​46
• Update agp to v9.2.1 by @​renovate[bot] in #​41
• Update Compose ecosystem to v1.11.1 by @​renovate[bot] in #​51
• Update Build tools to v2.4.0 by @​renovate[bot] in #​52
• fix(transport): contain TLS pump failures that crash the host app by @​jamesarich in #​54
• Update codecov/codecov-action action to v7 by @​renovate[bot] in #​53
• Replace local Wire codegen with org.meshtastic:protobufs SDK by @​jamesarich in #​50

Full Changelog: meshtastic/MQTTastic-Client-KMP@v0.3.6...v0.3.7

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[jamesarich]

Blocked on a Kotlin toolchain mismatch, not on this repo's code: mqtt-client 0.3.7 was built with Kotlin 2.4.0, and its klibs carry ABI version 2.4.0, which our Kotlin 2.3.21 compiler hard-rejects:

w: KLIB resolver: Skipping '...mqtt-client-iossimulatorarm64/0.3.7/...': incompatible ABI version '2.4.0'
The current Kotlin compiler can consume libraries having ABI version <= '2.3.0'.
> Task :core:network:compileKotlinIosSimulatorArm64 FAILED

We can't take Kotlin 2.4 until the Koin compiler plugin supports it (InsertKoinIO/koin#2431, tracked in #5760).

Fix in flight: meshtastic/MQTTastic-Client-KMP#55 re-ships 0.3.7's content (protobufs SDK migration + the TLS pump crash fix #54) on a 2.3.21 toolchain as v0.3.8, with a Renovate hold so the toolchain can't creep back to 2.4 until we're ready. Once 0.3.8 hits Maven Central, Renovate should update this PR and it'll go green. Leaving it open.