GitHub Actions 'Release' workflow should ensure package.json has correct version

[aarokorhonen]

Automating this will reduce human error during the release process, and potentially also avoid manual Pull Requests such as #191

Options:

1. The workflow can check the package.json field to ensure that the tag input (such as v0.1.5-experimental) matches the package.json field (such as 0.1.5)

2. Additionally or alternatively, the workflow can automatically modify this file, commit, and push the related change to origin.