Mark test dependencies with <!nocheck>

debian/control

@@ -8,11 +8,11 @@ Build-Depends:
  debhelper-compat (= 13)
  , dh-sequence-nodejs
  , mocha <!nocheck>
- , node-depd
- , node-inherits
- , node-setprototypeof
- , node-statuses
- , node-toidentifier
+ , node-depd <!nocheck>
+ , node-inherits <!nocheck>
+ , node-setprototypeof <!nocheck>
+ , node-statuses <!nocheck>
+ , node-toidentifier <!nocheck>
 Standards-Version: 4.6.0
 Vcs-Browser: https://salsa.debian.org/js-team/node-http-errors
 Vcs-Git: https://salsa.debian.org/js-team/node-http-errors.git