fix: preserve custom label colours when editing - #577

1) [self-hosted] › tests/self-hosted/public-board.spec.ts:27:1 › a public board can be viewed anonymously, and a private board can't @self-hosted Error: expect(locator).toBeVisible() failed Locator: getByRole('heading', { name: 'Public Board Test' }) Expected: visible Timeout: 5000ms Error: element(s) not found Call log: - Expect "toBeVisible" with timeout 5000ms - waiting for getByRole('heading', { name: 'Public Board Test' }) 67 | await expect( 68 | anonPage.getByRole("heading", { name: "Public Board Test" }), > 69 | ).toBeVisible(); | ^ 70 | await expect(anonPage.getByText("Visible to anyone")).toBeVisible(); 71 | 72 | await anonPage.goto(`/${workspacePublicId}/${privateBoardSlug}`); at /home/runner/work/kan/kan/packages/e2e/tests/self-hosted/public-board.spec.ts:69:7

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020, actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02, pnpm/action-setup@a7487c7e89a18df4991f7f222e4898a00d66ddda. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

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