Update ghcr.io/donkie/spoolman Docker tag to v0.21.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
ghcr.io/donkie/spoolman	Kustomization	minor	0.20.0 -> 0.21.0

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Release Notes

Donkie/Spoolman (ghcr.io/donkie/spoolman)

v0.21.0

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Frontend

• Added a new Locations page that shows an overview of your spools and where they are. You can move Spools around, add new locations, etc, from here.
• add archive/un archive button to spool view page by @​TomW1605 in https://github.com/Donkie/Spoolman/pull/517
• add external id to filament and vendor edit pages by @​TomW1605 in https://github.com/Donkie/Spoolman/pull/518
• Fixed not being able to clear the price field on filaments and spools.

Backend

• Update gitattributes to preserve LF line endings on the .env.example file by @​uro666 in https://github.com/Donkie/Spoolman/pull/497
• Added REST API to export spools, filaments or vendors as CSV or JSON. No frontend made for this yet. See the API docs on how to use this.
• Server logs now have a more consistent format for the different logging sources. This also fixes so the LOGGING_LEVEL variable is respected.
• Fixed vendor with spool weight 0 not being allowed in response structure, causing errors if you added a vendor with spool weight 0.

Translations

• Added Chinese (Traditional Han script) translation by Kayz C
• Added Romanian translation by Bestia Nadir
• Added Persian translation by AKTronics
• Updated Spanish translation by gallegonovato
• Updated Czech translation by Miloslav Kos
• Updated Chinese (Simplified Han script) translation by Samuel Wang
• Updated Polish translation by darkk-k1 and Daniel Zając
• Updated Ukrainian translation by Oleksii Martyniuk
• Updated Russian translation by Dr_Perry_Coke
• Updated Italian translation by Diogo Resende
• Updated French translation by Vincent MALZIEU
• Updated Dutch translation by Maurice Kevenaar

Full Changelog: Donkie/Spoolman@v0.20.0...v0.21.0

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