TS 6.0: Drop `lib` (`DOM.Iterable`)

[fregante]

Context: microsoft/TypeScript#60959 (comment)

tsconfig/tsconfig.json

Lines 8 to 12 in 2cb6725

	"lib": [
	"DOM",
	"DOM.Iterable",
	"ES2022" // Node.js 18
	],

AFAIK the config specifies lib here because we want DOM.Iterable to be there.

In TS 6 it will finally be part of DOM, which is the default.

At the very least, the config should be updated to drop DOM.Iterable

[fregante]

Alternative suggestion in #29 (comment)

DOM and DOM.Iterable should not exist in lib