Update to the RC release versions

[agubler]

Type: feature

The following has been addressed in the PR:

• [ ] There is a related issue
• [x] All code has been formatted with prettier as per the readme code style guidelines
• [ ] Unit or Functional tests are included in the PR

Description:

Bump @dojo/shim and @dojo/core to the RC release versions

Requires release of both @dojo/shim and @dojo/core