Pontoon: Update Bengali (bn) localization of Common Voice
Pontoon: Update Bengali (bn) localization of Common Voice

Localization authors:
- S M Sarwar Nobin <smsarwar1996@gmail.com>

gozer/voice-web,common-voice/common-voice,gozer/voice-web,common-voice/common-voice,common-voice/common-voice,gozer/voice-web,gozer/voice-web,gozer/voice-web,gozer/voice-web,gozer/voice-web,common-voice/common-voice