Release v1.2.1

This is not the latest release. You can find our latest release, v1.2.4, here.

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We fixed a bug in this release and updated the frontend and backend translations.

• Fixed a bug in the handling of resource files because of an unset header variable. Reported by SuitDeer in #240
• Thanks to our contributors, we updated the frontend translations for Bengali, Greek, and Slovak.
• Updated the backend translations for Italian thanks to mpaglia0