Update dependency react-i18next to v8

[renovate]

This PR contains the following updates:

Package	Type	Update	Change	References
react-i18next	devDependencies	major	^7.8.1 -> ^8.0.0	source

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Release Notes

i18next/react-i18next

v8.0.7

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• replaces getWrappedInstance on withNamespaces / translate with passing a innerRef facebook/react#​13456 534

v8.0.6

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• fix SSR cases

v8.0.5

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• fix issue with context not applied when merging i18n options

v8.0.4

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• add prop-types to peer deps as long we use the ponyfill create-react-context

v8.0.3

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• remove prop-types in tests

v8.0.2

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• remove proptypes dependency - not needed anylonger as we do not define old context
• move out ssr stuff to utils
• move reportNS to the NamespacesConsumer

v8.0.1

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• use @​babel/plugin-transform-runtime

v8.0.0

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• translate HOC was renamed to "withNamespaces" as it controls which namespaces should be loaded

• I18n render prop was renamed to "NamespacesConsumer" as it controls which namespaces should be "consumed"

• there is a new context.consuming HOC "withI18n" adds i18n, t to component props (without the extra options of withNamespaces)

• there is a simplification for interpolation in translations

'Hello <1><0>{{name}}</0></1>, you have <3>{{count}}</3> message. Open <5>hear</5>.'

can be written as:

'Hello <1>{{name}}</1>, you have {{count}} message. Open <5>hear</5>.'

=> there is no need to add <0>...</0> around interpolated values anylonger
=> your old files having those extra pseudo tags will still work without needing to change them

• there is a new I18nContext -> I18nContext.provider, I18next.consumer using new react context api

Using react's new context api

should be non breaking in most cases, with following exceptions:

• using preact you will have to use preact.createContext plugin (or eventual hope the provided polyfill works for preact too)
• you used the translate.getWrappedInstance function -> you will need to use instance.getWrappedInstance().getWrappedInstance() now as the translate hoc is now wrapped in an additional I18nContext.Consumer

still we prefer to increase this to a major version as beside the described egde cases there might be other effects we not have covered with our tests

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