fix: release vss 0.5.20 symbols

[ovitrif]

Refs synonymdev/bitkit-android#982

Related

• fix: retain native debug symbols bitkit-android#988
• fix: publish stripped android aar bitkit-core#101
• fix: publish android debug symbols ldk-node#84
• fix: publish android dwarf symbols pubky/paykit-rs#54

Description

Publishes the follow-up VSS mobile release after #14 merged.

• Bumps VSS to 0.5.20.
• Rebuilds Android and iOS artifacts from the same release commit.
• Updates Package.swift for the regenerated VssRustClientFfi.xcframework.zip checksum.
• Keeps Android AAR libraries stripped while publishing the separate native-debug-symbols classifier.

Release/package proof:

• Release: v0.5.20
• Release commit: 7112fefa26335510eea7588461c9d77d75e5d938
• Android package workflow: 27703652412
• Android package: com.synonym:vss-client-android:0.5.20
• Android native-debug-symbols classifier resolves from GitHub Packages.
• iOS release asset: VssRustClientFfi.xcframework.zip
• iOS checksum: 127785b12312fdf6adc8560a66f756164e52ac3f6cb7ec79b0282f007338d80a

QA Notes

Passed locally:

• ./build_ios.sh
• ./build_android.sh
• actionlint .github/workflows/gradle-publish.yml
• bash -n build_android.sh
• git diff --check

Remote checks:

• GitHub release v0.5.20 contains VssRustClientFfi.xcframework.zip.
• GitHub release v0.5.20 contains native-debug-symbols.zip.
• GitHub Packages returns HTTP 200 for the 0.5.20 POM, AAR, and native-debug-symbols classifier.

[ovitrif]

@ben-kaufman This PR simply does the same thing we had to do in the ldk-node PR so both iOS and Android bindings are in sync on the latest release.

[ben-kaufman]

Looks good. I rechecked the release tag, release assets, Android validation, and iOS checksum against the current head.