conf.py: raise protocols.http.peeksize to 8192
conf.py: raise protocols.http.peeksize to 8192

YouTube has recently updated its site design again so the <title> element falls right out of the 4K mark. This commit raises the default peeksize to 8K, which allows title snarfing to work with YouTube links again.
ProgVal/Limnoria-test,ProgVal/Limnoria-test,Ban3/Limnoria,Ban3/Limnoria