Bump MarkdownSnippets.MsBuild from 21.7.0 to 21.7.1 in /src
Bump MarkdownSnippets.MsBuild from 21.7.0 to 21.7.1 in /src

Bumps [MarkdownSnippets.MsBuild](https://github.com/SimonCropp/MarkdownSnippets) from 21.7.0 to 21.7.1.
- [Release notes](https://github.com/SimonCropp/MarkdownSnippets/releases)
- [Commits](https://github.com/SimonCropp/MarkdownSnippets/commits)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
SimonCropp/NServiceBus.ProtoBuf