Incorrect type for minMaxLoc

[pbowyer]

Thanks for putting together this library, it's great to have a version that can be imported and that has type support.

Now I'm using it in a strictly type-checked project I've found an incorrect type. minMaxLoc is reported as

function minMaxLoc(src: cv.Mat, minVal: any, maxVal?: any, minLoc?: any, maxLoc?: any, mask?: cv.Mat | undefined): void (+1 overload)

but when I use it it returns an object

const minMaxLoc = cv.minMaxLoc(grayImage)

[ttt43ttt]

Fixed in v4.8.0-release.6