fix(typescript-eslint): address trailing path sep bug in `tsconfigRootDir` inference#11406

kirkwaiblinger wants to merge 3 commits intotypescript-eslint:maintypescript-eslint/typescript-eslint:mainfrom

kirkwaiblinger:fix-tsconfig-root-dir-path-inferencekirkwaiblinger/typescript-eslint:fix-tsconfig-root-dir-path-inferenceCopy head branch name to clipboard