Upgrade axios to ^0.21

[JosiahOne]

axios has a critical (server-side request forgery) security vulnerability affecting versions <0.21.1.

This is causing npm audit warnings when installing pm2. This PR allows 0.21.1 to be installed, mitigating the problem.

I wasn't sure how to run tests, to unfortunately that hasn't been done. I have no idea if this upgrade is stable.

[kerimkaan]

@Unitech Please confirm this PR and upgrade axios to 0.21.1 following infos: GHSA-4w2v-q235-vp99 https://www.npmjs.com/advisories/1594

[mashpie]

and please don't forget to publish to npm :)

[Unitech]

Our CI did not managed to publish the package.

When:

git clone https://github.com/keymetrics/pm2-io-js-api.git
cd pm2-io-js-api
npm install

It fails with:

> @pm2/js-api@0.6.4 dist
> mkdir -p dist; browserify -s Keymetrics -r ./ | uglifyjs -c warnings=false -m > ./dist/keymetrics.es5.min.js

Parse error at 0:7247,20
exports.destroy = (() => {
                    ^
ERROR: Unexpected token: punc ())
    at JS_Parse_Error.get (eval at <anonymous> (/tmp/pm2-io-js-api/node_modules/uglify-js/tools/node.js:21:1), <anonymous>:73:23)
    at fatal (/tmp/pm2-io-js-api/node_modules/uglify-js/bin/uglifyjs:289:53)
    at run (/tmp/pm2-io-js-api/node_modules/uglify-js/bin/uglifyjs:233:9)
    at Socket.<anonymous> (/tmp/pm2-io-js-api/node_modules/uglify-js/bin/uglifyjs:166:9)
    at Socket.emit (node:events:388:22)
    at endReadableNT (node:internal/streams/readable:1295:12)
    at processTicksAndRejections (node:internal/process/task_queues:80:21)

I'm looking at it right now but if anyone has a suggestion that's welcome

[Unitech]

ok published, the error was caused because of latest version of debug

[mashpie]

Thanks! Works for me like in Unitech/pm2#4937 (comment)