E2E: Add ICE to webhooks events

[asein-sinch]

No description provided.

[JPPortier]

Approved but PR is having to run e2e again when mockerserver's PR with new feature definition will be merged

Not related to this PR but e2 tests are having this warn:

(node:5946) [DEP0040] DeprecationWarning: The `punycode` module is deprecated. Please use a userland alternative instead.

(e.g.: https://github.com/sinch/sinch-sdk-node/actions/runs/11343309223/job/31545602594#step:13:28)

[asein-sinch]

Done:

• Before the merge:

> @sinch/voice:"test:e2e"

$ cucumber-js
......................................................................
22 scenarios (22 passed)
70 steps (70 passed)
0m01.208s (executing steps: 0m01.086s)

• After the merge

> @sinch/voice:"test:e2e"
$ cucumber-js
..........................................................................
23 scenarios (23 passed)
74 steps (74 passed)
0m01.319s (executing steps: 0m01.226s)

[asein-sinch]

Regarding the deprecation warning, I guess it comes from a transitive dependency of eslint. I'll update it to the version 9 and flat config as I did in the snippets and quickstart repo already