Update languages.ts

[sunnychaudhary10]

Added the Bengali language....

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Name	Status	Preview	Comments	Updated (UTC)
google-translate-select-docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Mar 18, 2024 0:19am

[i7eo]

@sunnychaudhary10 Please add "bn" base64 icon, see: https://github.com/i7eo/google-translate-select/blob/master/packages/theme-chalk/src/google-translate-select.scss#L82