chore: run npm fix on package.json

[danielroe]

Publishing a package with the latest version of npm gives rise to the following error:

npm WARN publish npm auto-corrected some errors in your package.json when publishing.  Please run "npm pkg fix" to address these errors.
npm WARN publish errors corrected:
npm WARN publish "repository" was changed from a string to an object
npm WARN publish "repository.url" was normalized to "git+https://github.com/<repo>.git"

This PR (it isn't much, I know!) runs the command ...

See https://docs.npmjs.com/cli/v10/configuring-npm/package-json and specifically npm/cli#7299 (comment).