Fixed empty translators.json (#401)

* Update translators.json

* Added JSON parsing try-catch

Signed-off-by: Arnau Mora <arnyminerz@proton.me>

* Log complete exception

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Signed-off-by: Arnau Mora <arnyminerz@proton.me>
Co-authored-by: Ricki Hirner <hirner@bitfire.at>