Improve release script

[f1ames]

Recently, I have stumbled upon an issue where the release script did not update a single dependency in a single package.json file. No errors or anything, and later on, it wasn't obvious why CI is failing, so it took some time to find the root cause.

2 ideas for improvements:

• Revisit the library that is used for deps updating (though it worked flawlessly before).
• Improve the release script with a validation step that checks if all deps were updated as intended.