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

---

Release Notes

i18next/i18next

v21.4.2

Compare Source

• trim multiple formatters, fixes 1689

v21.4.1

Compare Source

• rtl fix for -arab language codes

v21.4.0

Compare Source

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

v21.3.3

Compare Source

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

v21.3.2

Compare Source

• formatter typescript declarations 1679

v21.3.1

Compare Source

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

v21.3.0

Compare Source

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

v21.2.6

Compare Source

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

v21.2.5

Compare Source

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

v21.2.4

Compare Source

• optimize Intl api check

v21.2.3

Compare Source

• fix Intl.PluralRules fallback

v21.2.2

Compare Source

• log error if Intl.PluralRules API is not available

v21.2.1

Compare Source

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

v21.2.0

Compare Source

• provide bundled esm distributable 1667

v21.1.1

Compare Source

• optimize natural language detection 1661

v21.1.0

Compare Source

• A new RTL support added for ckb language code

v21.0.2

Compare Source

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

v21.0.1

Compare Source

• fix typescript typo for skipOnVariables

v21.0.0

Compare Source

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

---

Configuration

📅 Schedule: "before 3am on Monday" (UTC).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever MR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this MR and you won't be reminded about this update again.

---

• If you want to rebase/retry this MR, click this checkbox.

---

This MR has been generated by Renovate Bot.