df7a91f192
ci: pin android emulator to 28.0.23 Apparently Android Emulator 28.0.25 (the latest one) is broken for us, and `sdkmanager` doesn't have a way to pin a package to a specific version. This PR stops downloading the emulator from `sdkmanager`, downloading it manually instead. Tested this locally and confirmed it works. I'll open an issue on Google's issue tracker later today. Fixes https://github.com/rust-lang/rust/issues/59757 r? @kennytm