Radius Bicep v0.28.0

What's Changed

• Update bicep upload to use release channel by @sk593 in #677
• Fix Windows arm64 build by @AaronCrawfis in #679
• Remove release refernces by @Reshrahim in #681
• Switch to Actions token for GHCR by @AaronCrawfis in #682
• Fix versioning issues for publishing to Azure Marketplace by @willdavsmith in #687
• Update Radius extensibility provider for Bicep by @rad-ci-bot in #684
• Set UPDATE_RELEASE=true for prerelease builds by @willdavsmith in #691
• Setting UPDATE_RELEASE=true for prerelease builds (#691) by @willdavsmith in #692
• Update Radius extensibility provider for Bicep by @rad-ci-bot in #689
• Update Radius extensibility provider for Bicep by @rad-ci-bot in #697

Full Changelog: v0.26.0...v0.28.0