Google.Cloud.Functions.Framework version 1.0.0-beta03

Release Functions Framework .NET packages version 1.0.0-beta03

Changes since 1.0.0-beta02:

- Improvements to F# templates
- Improved Firebase event conversions. (There will be more changes, but these are going in the right direction.)
- Support for Firebase RemoteConfig update events
- Improved templates for Visual Studio (from version 16.8.0 onwards, with the feature enabled in options)
- TestLogEntry now overrides ToString() in a useful way
- All assemblies are now signed (due to dependency updates, particularly to use CloudNative.CloudEvents 2.0.0-beta.1)

Packages in this release:
- Release Google.Cloud.Functions.Framework version 1.0.0-beta03
- Release Google.Cloud.Functions.Hosting version 1.0.0-beta03
- Release Google.Cloud.Functions.Templates version 1.0.0-beta03
- Release Google.Cloud.Functions.Testing version 1.0.0-beta03