extends should be an array in typescript 5.0

## Current behavior

`extends` in `configOverwrite` of `typescriptOptions` is currently a string where as ts 5.0 supports string[].
## Expected behavior

Support a string[]



## Environment
 - **fork-ts-checker-webpack-plugin**: 8.0.0
 - **typescript**: 5.1.0
 - **eslint**: 8.x
 - **webpack**: 5.x
 - **os**: Mac Ventura 13.5
