fix(deps): update dependency i18next to v21

This MR contains the following updates:

Package	Type	Update	Change
i18next (source)	dependencies	major	^20.0.0 -> ^21.0.0

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Release Notes

i18next/i18next

v21.4.2

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• trim multiple formatters, fixes 1689

v21.4.1

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• rtl fix for -arab language codes

v21.4.0

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• bind all i18next functions to this, this way you can for example just use t() instead of i18n.t() 1682

v21.3.3

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• apply default interpolation formatter when interpolation options don't specify one 1680

v21.3.2

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• formatter typescript declarations 1679

v21.3.1

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• get rid of internal isDummy check to prevent react-native issue 1675

v21.3.0

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• adds support for formats provided by Intl API (number, currency, datetime, relativedate, list)

v21.2.6

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• optimize do skip natural language detection also if user provided nsSeparator option is passed via direct options

v21.2.5

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• do skip natural language detection also if user provided nsSeparator option is passed 1665

v21.2.4

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• optimize Intl api check

v21.2.3

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• fix Intl.PluralRules fallback

v21.2.2

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• log error if Intl.PluralRules API is not available

v21.2.1

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• do skip natural language detection, if user provided keySeparator option is passed 1670

v21.2.0

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• provide bundled esm distributable 1667

v21.1.1

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• optimize natural language detection 1661

v21.1.0

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• A new RTL support added for ckb language code

v21.0.2

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• fix defaultNS regression if translation namespace is defined in ns option, fixes #​1658

v21.0.1

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• fix typescript typo for skipOnVariables

v21.0.0

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This is a major breaking release:

• introduce new v4 json format (intl plural forms with ordinal support), simplifyPluralSuffix not used anymore
• skipOnVariables by default now is true
• automatically detect natural language keys (no need to set nsSeparator or keySeparator to false)
• remove deprecated whitelist features
• introduce new i18next.resolvedLanguage property

➡️ check out the migration guide

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