notNeededPackages check should enforce case of library name 

Recently, the deprecation of

```
"noUiSlider": {
  "libraryName": "noUiSlider",
  "asOfVersion": "15.0.0"
}
```

broke publishing because `@types/nouislider` needed to be deprecated in favour of `nouislider`. However, the case mismatch was not caught by CI and the publisher failed when requesting the uppercase versions from npm.