Bump intl version to make it compatible with flutter >= 3.10.0

[pdenert]

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fix: #259

CLA

• [x] I have signed the Stream CLA (required).
• [x] The code changes follow best practices
• [x] Code changes are tested (add some information if not applicable) Just bumped package, so it's won't require new tests.

Description of the pull request

Bump intl version to make it compatible with flutter >= 3.10.0