chore(circleci): bump nodejs version to from v16 to v18

[rpl]

This PR bumps the nodejs versions used by the circleci jobs:

• test: to v18 (from v16)
• test-next: to v20 (from v18)
• test-alternate: to v22 (from v19)

Fixes test job issue while running recent web-ext tests on a recent unreleased web-ext version where nodejs >= 18 is required (e.g. see example failure here), introduced as a side effect of the changes from mozilla/web-ext#3217.

[fregante]

If you update the tests you should probably also change the supported versions in package.json:

addons-linter/package.json

Lines 9 to 14 in 2a04e0c

	"engines": {
	"node": ">=16.0.0"
	},
	"browserslist": [
	"node >=16.0.0"
	],

Alternatively, if you don't want to change this package/tests yet, we can change web-ext to import { Blob } from 'url' instead of relying on the globals; those are supported in Node v16.

But dropping Node 16 support is likely a good idea anyway, to match web-ext and because it reached EOL a year ago: https://endoflife.date/nodejs

[willdurand]

Yeah, I think we want to update the package.json file here to

[rpl]

Yeah, I think we want to update the package.json file here to

yep, that's definitely right. I just updated this PR to also include the bump of the nodejs version in the addons-linter package.json.

[willdurand]

Thanks!