feat!: use Web Crypto API

[rexxars]

Supersedes #40
Fixes #38

While the idea of using the Web Crypto API is fine, it requires a significant amount of changes due to the async nature of the API. I still think it is worth moving to however, since it broadens the range of ecosystems we can support (Browser, Deno, Bun, workers etc) so this PR switches to it and moves to async functions.

Also removes the base64url dependency, since we can achieve the same in plain JS and avoid having to bundle.

Now requires Node 18 or higher.

[socket-security]

New, updated, and removed dependencies detected. Learn more about Socket for GitHub ↗︎

Packages	Version	New capabilities	Transitives	Size	Publisher
vitest	0.34.6	network, filesystem, shell, environment	+56	252 MB	oreanno
semantic-release	22.0.8	environment	+42	14 MB
@typescript-eslint/eslint-plugin	6.12.0	None	+16	8.22 MB	jameshenry
@sanity/pkg-utils	3.2.4	filesystem, environment	+157	312 MB	sanity-io
prettier	3.1.0	filesystem, environment	+0	8.44 MB	prettier-bot
rimraf	5.0.1...5.0.5	environment	+2/-0	985 kB	isaacs
@types/express	4.17.17...4.17.21	None	+0/-0	7.86 kB	types
ls-engines	0.9.0...0.9.1	None	+13/-9	1.44 MB	ljharb
eslint-config-sanity	6.0.0...7.0.1	None	+17/-5	8.24 MB	sanity-io
prettier-plugin-packagejson	2.4.5...2.4.6	None	+3/-2	8.47 MB	matzkoh
@sanity/semantic-release-preset	4.1.4...4.1.6	None	+44/-70	14 MB	sanity-io
@typescript-eslint/parser	6.5.0...6.12.0	None	+11/-6	5.24 MB	jameshenry
@types/supertest	2.0.12...2.0.16	None	+0/-0	7.06 kB	types
eslint-plugin-prettier	5.0.0...5.0.1	None	+8/-5	12.4 MB	jounqin
eslint	8.48.0...8.54.0	None	+6/-4	3.89 MB	eslintbot
typescript	5.2.2...5.3.2	None	+0/-0	32 MB	typescript-bot

🚮 Removed packages: [email protected]

[stipsan]

Awesome rewrite 🥳

[stipsan]

This block can be deleted as it's already included in the base matrix 😌