Update request: krita 5.2.3 → 5.2.6

[callyral]

• Package name: krita
• Latest released version: 5.2.6
• Current version on the unstable channel: 5.2.3
• Current version on the stable/release channel: 5.2.2
• [X] Checked the nixpkgs pull requests

Notify maintainers

@abbradar @sifmelcara

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[callyral]

Krita 5.2.6 blog post