[5.4] Composer update algo26-matthias/idna-convert to v3.2.1

[heelc29]

Pull Request for Issue #46688 .

Summary of Changes

update algo26-matthias/idna-convert to v3.2.1 to fix php8.5 compatibility
https://github.com/algo26-matthias/idna-convert/releases/tag/v3.2.1

Testing Instructions

disable php opcache extension
open backend and login

Actual result BEFORE applying this Pull Request

If the display error is enabled, otherwise check the PHP error log.

Expected result AFTER applying this Pull Request

message gone

Link to documentations

Please select:

• No documentation changes for docs.joomla.org needed
• No documentation changes for manual.joomla.org needed

[brianteeman]

I have tested this item ✅ successfully on 7a30cb5

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[tecpromotion]

I have tested this item ✅ successfully on 7a30cb5

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_{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/46724.}

[tecpromotion]

RTC

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_{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/46724.}

[muhme]

✅ Final test before merge with JBT using php8.5

• Seen Deprectad errors in backend before
• Manual edited 3.2.1 plus running composer update algo26-matthias/idna-convert 3.2.1 and saved composer.* files
• Applied PR via gh pr checkout 46724
• Deprecated errors in backend are gone
• composer.* files are identical with own created
• Viewed differences algo26-matthias/idna-convert 3.2.0...v3.2.1

[muhme]

Thank you @heelc29 for your contribution. Thank you @brianteeman and @tecpromotion for testing.