Update gettext/gettext requirement from ^4.8 to ^5.7

[dependabot]

Updates the requirements on gettext/gettext to permit the latest version.

Release notes

Sourced from gettext/gettext's releases.

5.7.2

See CHANGELOG

Changelog

Sourced from gettext/gettext's changelog.

[5.7.2] - 2024-11-24

Fixed

• Php 8.4 support #300.

[5.7.1] - 2024-07-24

Fixed

• Parsing of PO files with empty comments instead of empty lines #296
• Support for PHP >= 8.2 #299

[5.7.0] - 2022-07-27

Added

• StrictPoLoader, a stricter PO loader more aligned with the syntax of the GNU gettext tooling #282.
• Previous attributes (msgctxt, msgid, msgid_plural) to the Translation class and the PO generator #282.

Changed

• Minor performance improvements to the Translations class #282.

[5.6.1] - 2021-12-04

Fixed

• PHP 8.1 support #278.

[5.6.0] - 2021-11-05

Added

• New method addFlag to ParsedFunction, that allows to assign flags by scanners.
• The FunctionsHandlersTrait has an abstract addFlags method.

Fixed

• Subsequent load file fails #257 #276
• Upgraded some dependencies in dev.

[5.5.4] - 2020-12-20

Fixed

• TypeError in which numeric entries were converted to integers #265

[5.5.3] - 2020-12-01

Fixed

• Add PHP 8 to composer.json

[5.5.2] - 2020-11-17

Fixed

• Parse of multiline disabled translations #262 #263

[5.5.1] - 2020-06-08

Fixed

• Type error in which numeric filenames were converted to integers #260

[5.5.0] - 2020-05-23

Added

• New option addReferences() to configure the code scanners whether add or not references #258

... (truncated)

Commits

• c7a0650 new version
• f5b0221 Merge pull request #300 from cracksalad/master
• dc5d398 Fix PHP 8.4 explicit nullable compatibility
• a9f89e0 new version
• 73c501a Merge pull request #299 from pedro-mendonca/php-8-3-test
• b8bc186 Sort by key comparing as strings
• 425d254 Add original string "15"
• f8dfb01 Move numbers before words in string sorting on the .mo test file
• 5e7551f add tests for php 8.2 and 8.3
• 89db10d Merge pull request #297 from szepeviktor/typos
• Additional commits viewable in compare view

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