Add update information to commit messages

[martincostello]

Add information, based on the format dependabot uses, to the commit messages that show the version update that was performed.

This is to support parsing the commit messages with automated tooling.

For example:

Update .NET SDK

Update .NET SDK to version 3.1.417.

---
updated-dependencies:
- dependency-name: Microsoft.NET.Sdk
  update-type: version-update:semver-patch
...

Also:

• Fixes typo in log message.
• Updates the default branch name in the release note URLs.
• Adds Visual Studio Code configuration files for debugging.