setup.cfg: Raise Appveyor timeout limit
setup.cfg: Raise Appveyor timeout limit

Closes https://github.com/coala/coala/issues/5756

coala-analyzer/coala,coala/coala,jayvdb/coala,jayvdb/coala,coala/coala,SanketDG/coala,SanketDG/coala,coala-analyzer/coala,coala/coala,coala-analyzer/coala,SanketDG/coala,jayvdb/coala