Release

What's Changed

• Update branding to 9.0.12 by @vseanreesermsft in https://github.com/dotnet/aspnetcore/pull/64248
• Update Microsoft.Build versions to 17.8.43 by @MackinnonBuck in https://github.com/dotnet/aspnetcore/pull/64277
• [release/9.0] (deps): Bump src/submodules/googletest from 9706f75 to 6ec14df by @dependabot[bot] in https://github.com/dotnet/aspnetcore/pull/64230
• [release/9.0] Update dependencies from dotnet/extensions by @dotnet-maestro[bot] in https://github.com/dotnet/aspnetcore/pull/64111
• [release/9.0] Update dependencies from dotnet/arcade by @dotnet-maestro[bot] in https://github.com/dotnet/aspnetcore/pull/64065
• [release/9.0] Upgrade to MacOS 15 for CI by @wtgodbe in https://github.com/dotnet/aspnetcore/pull/64310
• Merging internal commits for release/9.0 by @vseanreesermsft in https://github.com/dotnet/aspnetcore/pull/64312
• [release/9.0] Don't use netcoreapp2.1 in dotnet-get-document by @wtgodbe in https://github.com/dotnet/aspnetcore/pull/64351
• [release/9.0] AppContext for HttpSys CBT hardening by @BrennanConroy in https://github.com/dotnet/aspnetcore/pull/64297
• [release/9.0] Update dependencies from dotnet/arcade by @dotnet-maestro[bot] in https://github.com/dotnet/aspnetcore/pull/64350
• [release/9.0] Update dependencies from dotnet/extensions by @dotnet-maestro[bot] in https://github.com/dotnet/aspnetcore/pull/64388
• [release/9.0] Delete signalr-daily-tests.yml by @github-actions[bot] in https://github.com/dotnet/aspnetcore/pull/64589
• [release/9.0] (deps): Bump src/submodules/googletest from 6ec14df to 1b96fa1 by @dependabot[bot] in https://github.com/dotnet/aspnetcore/pull/64580
• [release/9.0] Update dependencies from dotnet/extensions by @dotnet-maestro[bot] in https://github.com/dotnet/aspnetcore/pull/64503

Full Changelog: https://github.com/dotnet/aspnetcore/compare/v9.0.11...v9.0.12