⬆️ Upgrade dependency intl to v0.20.3

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
intl (source)	dependencies	patch	0.20.2 → 0.20.3

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Release Notes

dart-lang/i18n (intl)

v0.20.3

Compare Source

• Updated the Turkish Lira (TRY) currency symbol in simpleCurrencySymbols
  from "TL" to "₺" (U+20BA). This ensures accuracy and alignment with the
  official symbol introduced in 2012.
• Fix parsing of locale strings containing script codes in verifiedLocale.
  For example, zh-Hans-CN would have been previously parsed as zh, but is
  now parsed as zh_CN.
• Update the Ghanaian Cedis (GHS) currency symbol in simpleCurrencySymbols
  from "GHS" to "GH₵(U+20B5)".
• Update to CLDR v48.
• Add @pragma('wasm:prefer-inline') to Intl methods that already have
  @pragma('vm:prefer-inline'), for the same reason: to help omit message
  descriptions from compiled output.
• Update analysis to newest package:lints.

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