Feature/update i18next to v23.x (#391)

* Update i18next to v23.x

Update to version 23.2.7

* Use new "ParseKeys" (old: "TFuncKey") type

* Remove unnecessary casts to string

Not needed anymore with the latest version

src/typings.ts

@@ -8,7 +8,7 @@
 
 import { OverridableComponent } from '@mui/material/OverridableComponent';
 import { SvgIconTypeMap } from '@mui/material/SvgIcon/SvgIcon';
-import { TFuncKey } from 'i18next';
+import { ParseKeys } from 'i18next';
 import { Location } from 'react-router-dom';
 
 type GenericLocation<State = any> = Omit<Location, 'state'> & { state?: State };
@@ -19,7 +19,7 @@ declare module 'react-router-dom' {
     export function useLocation<State = any>(): GenericLocation<State>;
 }
 
-export type TranslationKey = TFuncKey;
+export type TranslationKey = ParseKeys;
 
 export interface IExtension {
     name: string;