Upgrades vue cli packages and does bumps on others to remove deprecation and security warnings. The remaining high security vulnerability in in vue-sockets.io which requires a major version increase that would have major effects, so that will have to be turned into an issue.
Developer self-review checklist
[x] Potentially confusing code has been explained with comments
[x] No warnings or errors have been introduced; all known error cases have been handled
[x] Any appropriate documentation (within the code, README.md, docs, etc) has been updated
Description
Developer self-review checklist