Fix mode for 'ec-ic'

[KristjanESPERANTO]

This will fix on error in the integration test.

The tap update was only suitable here, it has nothing to do with the fix.
Update: The tap update has been withdrawn.

[derhuerst]

The tap update was only suitable here, it has nothing to do with the fix.

The change from ^18.0.4 to ^18.6.1 doesn't have any effects since a) we're using a semver range here (^) and b) the lockfile isn't checked into Git.

If you had cloned hafas-client and installed dependencies (which creates a package-lock.json lockfile) before, and now want to get the latest tap version, run npm upgrade instead.

[derhuerst]

Even though ec-ic was not intended, this could be considered a breaking change by some people who depend on this specific value. I'm still fine with publishing with a non-major version though.

[KristjanESPERANTO]

Okay I've withdrawn the tap update.

[derhuerst]

Thanks!

[derhuerst]

In case anyone is wondering: A while ago, I published this fix as [email protected]. 🎉