Update dependency intl to ^0.19.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
intl (source)	dev_dependencies	minor	^0.17.0 -> ^0.19.0

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Release Notes

dart-lang/i18n (intl)

v0.19.0

Compare Source

• Update to CLDR v44.
• Update to CLDR v43.
• Add tryParse to NumberFormat.
• Add tryParse tryParseStrict tryParseLoose tryParseUtc to DateFormat.
• Add fallback for deprecated locales, such as he <-> iw.
• Switch QAR currency name to Riyal.
• Add license headers to some files.
• Update CVE currency symbol.
• Add EEEEE skeleton for DateFormat, closing #​176.
• Switch to 3.0.0 SDK.
• Fix issue #​483 about date parsing with a yy skeleton.
• Extract NumberParserBase abstract class

v0.18.1

• Update ruble sign and update corresponding test.
• Remove unimplemented timezone functionality.
• Update git path in pubspec.
• Update to CLDR v42.

v0.18.0

• Add support for minimumSignificantDigits / maximumSignificantDigits in
  NumberFormat.
• Add support for plural in NumberFormat.compact() ('2 milliards').
• Fix negative number formatting / parsing in NumberFormat.compact().
• Add optional parameter to NumberFormat.compact() to explicitly add sign
  even for positive values.
• Add decimalPatternDigits to NumberFormat which supports specifying the
  number of decimal digits in a decimal pattern.
• Update to cldr 40.
• Migrate to package:lints/recommended.yaml.
• Remove some instances of dynamic types from the API.
• Fix a bug caused by a typo in the plural rules calculation.
• Unify IntlStream and StringIterator into StringStack.
• Update to CLDR v41.
• Add new locales: as, bm, en_NZ, fur, mg, nyn.
• Remove unimplemented formatDuration and formatDurationFrom.
• Make shortLocale and canonicalizedLocale implementations smarter.

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