Bump version for 4.3.0 release

[addb]

Description

Related Issue

Motivation and Context

How Has This Been Tested?

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• I have signed the Adobe Open Source CLA.
• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

[codecov]

Codecov Report

Merging #428 (679ff11) into dev (5eda28b) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##              dev     #428   +/-   ##
=======================================
  Coverage   96.76%   96.76%           
=======================================
  Files          27       27           
  Lines        1730     1730           
=======================================
  Hits         1674     1674           
  Misses         56       56           

[emdobrin]

• make sure you also update the Package.swift one or simply run the update versions workflow
• can you also run pod update on the test apps to bring latest dependencies