npx azle install-global-dependencies should fail if the new versions aren't correct

[lastmjs]

It would be nice for npx azle install-global-dependencies to automatically run the commands node --version, rustc --version, dfx --version etc and check that they return the correct result. If they don't, perhaps we should try to fix the situation or ask the developer to close and open their terminals, which would probably fix the node issue at least (the other dependencies probably will have updated correctly).