Prepare release 1.4

[asein-sinch]

No description provided.

[matsk-sinch]

Code Review Findings

1. Missing CHANGELOG entry for resetClient() → resetApiClient() rename

Files: packages/elastic-sip-trunking/CHANGELOG.md, packages/voice/CHANGELOG.md
Severity: 🔴 Critical

The resetClient() → resetApiClient() rename (commit a43fc08 on the leftovers-for-1.4 branch) is a breaking change for anyone extending LazyElasticSipTrunkingApiClient, LazyVoiceApiClient, or LazyVoiceApplicationManagementApiClient. This rename should be documented in the EST and Voice CHANGELOGs under [Tech] before release.

2. Missing CHANGELOG entry for Fax model fixes

File: packages/fax/CHANGELOG.md
Severity: 🟠 Medium

Commit 80b9980 ("Small Fax API fixes") adds properties to the Email and ServicePhoneNumber models and updates tests, but the fax CHANGELOG doesn't mention these model changes. Consider adding a [Bugfix] or [Tech] entry so users are aware of the model updates.

[asein-sinch]

@matsk-sinch

1. Missing CHANGELOG entry for resetClient() → resetApiClient() rename
   => Won't fix as this feature has not be released yet, this is a change on an on-going development that will surface for the end-user with the 1.4 delivery only.

2. Missing CHANGELOG entry for Fax model fixes
   => I've updated the changelog file accordingly

[matsk-sinch]

on the way to v1.4 🚀