[Snyk] Security upgrade npm-check-updates from 2.15.0 to 3.0.0

Changes to the following files to upgrade the vulnerable dependencies to a fixed version:
- package.json

Severity	Priority Score (*)	Issue	Breaking Change	Exploit Maturity
	696/1000 Why? Recently disclosed, Has a fix available, CVSS 8.2	Arbitrary File Overwrite SNYK-JS-TAR-1536528	Yes	No Known Exploit
	696/1000 Why? Recently disclosed, Has a fix available, CVSS 8.2	Arbitrary File Overwrite SNYK-JS-TAR-1536531	Yes	No Known Exploit

(*) Note that the real score may have changed since the PR was raised.

Commit messages

Package name: npm-check-updates

The new version differs by 64 commits.

4dc843f 3.0.0
1121fbc README
3a91c87 Upgrade packages
c301680 Match E404 error messages.
564a277 Add tests for detecting -alpha, -beta, -rc. Closes #368.
d319202 Replace --prod/dev/etc with --dep. -m = --minimal. -p = --packageManager.
07ec417 README
6133184 Fix spacing in ncu -g output (minor).
74bc003 Add linting and vulnerability testing to "npm test".
6804d56 Upgrade non-major dependencies.
54bca4d Make -u output clearer.
bc056c6 Upgrade dependency: eslint
3a03e87 Lint
f8a7bcc Upgrade dependency: mocha
4396ede Upgrade dependency: should
3bb2daf Upgrade dependency: tmp
6a7ae3b Upgrade dependency: get-stdin
2c7f8d2 Merge unit tests from #382
c4658e6 Upgrade dependency: chalk
802af36 Default arguments (minor)
8b261f5 Remove npm and npmi from dependencies. Use requireg instead of npmi in bower.
2ea7cb0 Upgrade dependency: find-up
d7fee5c Minor update of tabs to spaces and a few lingering vars.
a1444b7 Skip test. TODO: filter org deps by regex.

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gipplab / MathMLben