We can use built-in fetch since we use Node.js 18

[danielpeintner]

With #64 we should be able to avoid skipping the following test

td-tools/node/aas-aid/test/asset-interfaces-description-test.ts

Lines 1310 to 1312 in d370a94

	@test.skip async "should correctly transform counter TD into JSON AAS"() {
	// built-in fetch requires Node.js 18+
	const response = await fetch("http://plugfest.thingweb.io:8083/counter");

Let's give it a try ...

[danielpeintner]

Note: at the moment we cannot update the test, we need to wait till the online counter TD is back online