chore: Drop building sentry-native with Ubuntu 20.04
#2355
Merged
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We currently build
sentry-nativeon Ubuntu 20.04 to maintain GLIBC compatibility (see #1730). Since Ubuntu 20.04 runners are no longer available on GitHub Actions, we use a Docker container for this build.This container approach has increased maintenance overhead. For example, we need to manually install .NET SDK dependencies that are normally provided by GitHub's standard runners. For this we can not use the setup action as it's dependencies are missing on the old image. See here.
Impact: This only affects users who update to newer SDK versions while running servers on Ubuntu 20.04, which reached EOL in May 2025.