Update node-wot dependencies

[danielpeintner]

I noticed we are using an older version of node-wot.

test-things/package.json

Lines 23 to 24 in 7f54e7a

	"@node-wot/binding-http": "~0.8.16",
	"@node-wot/core": "~0.8.16",

Version 0.9.1 is out already...