[tools/depends] Bump gettext 0.22.4

[fuzzard]

Description

Bump gettext 0.22.4

Motivation and context

Cleanup. Updates to latest release. Allows us to remove the am_cv_func_iconv_works workaround, as it appears to now be functional in sonoma (fixed in 0.22.3)
Also testing to try and remove a patch (01-gettext-tools-stpncpy.patch) thats been around forever, and im not sure if its required anymore. Builds/runs ok on macos without, so jenkins will let me know android/linux failures hopefully.

How has this been tested?

Build/run macos aarch64

What is the effect on users?

N/A

Screenshots (if appropriate):

Types of change

• Bug fix (non-breaking change which fixes an issue)
• Clean up (non-breaking change which removes non-working, unmaintained functionality)
• Improvement (non-breaking change which improves existing functionality)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that will cause existing functionality to change)
• Cosmetic change (non-breaking change that doesn't touch code)
• Student submission (PR was done for educational purposes and will be treated as such)
• None of the above (please explain below)

Checklist:

• My code follows the Code Guidelines of this project
• My change requires a change to the documentation, either Doxygen or wiki
• I have updated the documentation accordingly
• I have read the Contributing document
• I have added tests to cover my change
• All new and existing tests passed

[fuzzard]

Jenkins build this please

[sundermann]

Tested on webOS and macOS