(minor) Auto-updater error under linux

[SR-G]

(at least) Under linux, at start time, the AppImage is not able to find the remote URL :

Checking for updates...
Error: Error: Cannot find latest-linux.yml in the latest release artifacts (https://github.com/LordKnish/StreamGrid/releases/download/v1.2.3/latest-linux.yml): HttpError: 404 
"method: GET url: https://github.com/LordKnish/StreamGrid/releases/download/v1.2.3/latest-linux.yml\n\nPlease double check that your authentication token is correct. Due to security reasons, actual status maybe not reported, but 404.\n"
Headers: {
  "cache-control": "no-cache",
  "content-length": "9",
  "content-security-policy": "default-src 'none'; base-uri 'self'; connect-src 'self'; form-action 'self'; img-src 'self' data:; script-src 'self'; style-src 'unsafe-inline'",
  "content-type": "text/plain; charset=utf-8",
  "date": "Wed, 17 Sep 2025 20:02:10 GMT",
  "referrer-policy": "no-referrer-when-downgrade",
  "server": "github.com",
  "strict-transport-security": "max-age=31536000; includeSubdomains; preload",
  "vary": "X-PJAX, X-PJAX-Container, Turbo-Visit, Turbo-Frame, X-Requested-With,Accept-Encoding, Accept, X-Requested-With",
  "x-content-type-options": "nosniff",
  "x-frame-options": "deny",
  "x-github-request-id": "964E:188533:5BBB8C7:4DB0047:68CB13C2",
  "x-xss-protection": "0"
}
    at createHttpError (/tmp/.mount_StreamS1uPr2/resources/app.asar/node_modules/electron-updater/node_modules/builder-util-runtime/out/httpExecutor.js:21:12)
    at ElectronHttpExecutor.handleResponse (/tmp/.mount_StreamS1uPr2/resources/app.asar/node_modules/electron-updater/node_modules/builder-util-runtime/out/httpExecutor.js:121:20)
    at ClientRequest.<anonymous> (/tmp/.mount_StreamS1uPr2/resources/app.asar/node_modules/electron-updater/node_modules/builder-util-runtime/out/httpExecutor.js:87:26)
    at ClientRequest.emit (node:events:519:28)
    at SimpleURLLoaderWrapper.<anonymous> (node:electron/js2c/browser_init:2:114720)
    at SimpleURLLoaderWrapper.emit (node:events:519:28)
    at newError (/tmp/.mount_StreamS1uPr2/resources/app.asar/node_modules/electron-updater/node_modules/builder-util-runtime/out/error.js:5:19)
    at fetchData (/tmp/.mount_StreamS1uPr2/resources/app.asar/node_modules/electron-updater/out/providers/GitHubProvider.js:113:63)
    at async GitHubProvider.getLatestVersion (/tmp/.mount_StreamS1uPr2/resources/app.asar/node_modules/electron-updater/out/providers/GitHubProvider.js:123:23)
    at async AppImageUpdater.getUpdateInfoAndProvider (/tmp/.mount_StreamS1uPr2/resources/app.asar/node_modules/electron-updater/out/AppUpdater.js:343:19)
    at async AppImageUpdater.doCheckForUpdates (/tmp/.mount_StreamS1uPr2/resources/app.asar/node_modules/electron-updater/out/AppUpdater.js:356:24)
Error in auto-updater: Error: Cannot find latest-linux.yml in the latest release artifacts (https://github.com/LordKnish/StreamGrid/releases/download/v1.2.3/latest-linux.yml): HttpError: 404 
"method: GET url: https://github.com/LordKnish/StreamGrid/releases/download/v1.2.3/latest-linux.yml\n\nPlease double check that your authentication token is correct. Due to security reasons, actual status maybe not reported, but 404.\n"
Headers: {
  "cache-control": "no-cache",
  "content-length": "9",
  "content-security-policy": "default-src 'none'; base-uri 'self'; connect-src 'self'; form-action 'self'; img-src 'self' data:; script-src 'self'; style-src 'unsafe-inline'",
  "content-type": "text/plain; charset=utf-8",
  "date": "Wed, 17 Sep 2025 20:02:10 GMT",
  "referrer-policy": "no-referrer-when-downgrade",
  "server": "github.com",
  "strict-transport-security": "max-age=31536000; includeSubdomains; preload",
  "vary": "X-PJAX, X-PJAX-Container, Turbo-Visit, Turbo-Frame, X-Requested-With,Accept-Encoding, Accept, X-Requested-With",
  "x-content-type-options": "nosniff",
  "x-frame-options": "deny",
  "x-github-request-id": "964E:188533:5BBB8C7:4DB0047:68CB13C2",
  "x-xss-protection": "0"
}
    at createHttpError (/tmp/.mount_StreamS1uPr2/resources/app.asar/node_modules/electron-updater/node_modules/builder-util-runtime/out/httpExecutor.js:21:12)
    at ElectronHttpExecutor.handleResponse (/tmp/.mount_StreamS1uPr2/resources/app.asar/node_modules/electron-updater/node_modules/builder-util-runtime/out/httpExecutor.js:121:20)
    at ClientRequest.<anonymous> (/tmp/.mount_StreamS1uPr2/resources/app.asar/node_modules/electron-updater/node_modules/builder-util-runtime/out/httpExecutor.js:87:26)
    at ClientRequest.emit (node:events:519:28)
    at SimpleURLLoaderWrapper.<anonymous> (node:electron/js2c/browser_init:2:114720)
    at SimpleURLLoaderWrapper.emit (node:events:519:28)
    at newError (/tmp/.mount_StreamS1uPr2/resources/app.asar/node_modules/electron-updater/node_modules/builder-util-runtime/out/error.js:5:19)
    at fetchData (/tmp/.mount_StreamS1uPr2/resources/app.asar/node_modules/electron-updater/out/providers/GitHubProvider.js:113:63)
    at async GitHubProvider.getLatestVersion (/tmp/.mount_StreamS1uPr2/resources/app.asar/node_modules/electron-updater/out/providers/GitHubProvider.js:123:23)
    at async AppImageUpdater.getUpdateInfoAndProvider (/tmp/.mount_StreamS1uPr2/resources/app.asar/node_modules/electron-updater/out/AppUpdater.js:343:19)
    at async AppImageUpdater.doCheckForUpdates (/tmp/.mount_StreamS1uPr2/resources/app.asar/node_modules/electron-updater/out/AppUpdater.js:356:24) {
  code: 'ERR_UPDATER_CHANNEL_FILE_NOT_FOUND'
}
(node:979180) UnhandledPromiseRejectionWarning: Error: Cannot find latest-linux.yml in the latest release artifacts (https://github.com/LordKnish/StreamGrid/releases/download/v1.2.3/latest-linux.yml): HttpError: 404 
"method: GET url: https://github.com/LordKnish/StreamGrid/releases/download/v1.2.3/latest-linux.yml\n\nPlease double check that your authentication token is correct. Due to security reasons, actual status maybe not reported, but 404.\n"
Headers: {
  "cache-control": "no-cache",
  "content-length": "9",
  "content-security-policy": "default-src 'none'; base-uri 'self'; connect-src 'self'; form-action 'self'; img-src 'self' data:; script-src 'self'; style-src 'unsafe-inline'",
  "content-type": "text/plain; charset=utf-8",
  "date": "Wed, 17 Sep 2025 20:02:10 GMT",
  "referrer-policy": "no-referrer-when-downgrade",
  "server": "github.com",
  "strict-transport-security": "max-age=31536000; includeSubdomains; preload",
  "vary": "X-PJAX, X-PJAX-Container, Turbo-Visit, Turbo-Frame, X-Requested-With,Accept-Encoding, Accept, X-Requested-With",
  "x-content-type-options": "nosniff",
  "x-frame-options": "deny",
  "x-github-request-id": "964E:188533:5BBB8C7:4DB0047:68CB13C2",
  "x-xss-protection": "0"
}
    at createHttpError (/tmp/.mount_StreamS1uPr2/resources/app.asar/node_modules/electron-updater/node_modules/builder-util-runtime/out/httpExecutor.js:21:12)
    at ElectronHttpExecutor.handleResponse (/tmp/.mount_StreamS1uPr2/resources/app.asar/node_modules/electron-updater/node_modules/builder-util-runtime/out/httpExecutor.js:121:20)
    at ClientRequest.<anonymous> (/tmp/.mount_StreamS1uPr2/resources/app.asar/node_modules/electron-updater/node_modules/builder-util-runtime/out/httpExecutor.js:87:26)
    at ClientRequest.emit (node:events:519:28)
    at SimpleURLLoaderWrapper.<anonymous> (node:electron/js2c/browser_init:2:114720)
    at SimpleURLLoaderWrapper.emit (node:events:519:28)
    at newError (/tmp/.mount_StreamS1uPr2/resources/app.asar/node_modules/electron-updater/node_modules/builder-util-runtime/out/error.js:5:19)
    at fetchData (/tmp/.mount_StreamS1uPr2/resources/app.asar/node_modules/electron-updater/out/providers/GitHubProvider.js:113:63)
    at async GitHubProvider.getLatestVersion (/tmp/.mount_StreamS1uPr2/resources/app.asar/node_modules/electron-updater/out/providers/GitHubProvider.js:123:23)
    at async AppImageUpdater.getUpdateInfoAndProvider (/tmp/.mount_StreamS1uPr2/resources/app.asar/node_modules/electron-updater/out/AppUpdater.js:343:19)
    at async AppImageUpdater.doCheckForUpdates (/tmp/.mount_StreamS1uPr2/resources/app.asar/node_modules/electron-updater/out/AppUpdater.js:356:24)
(Use `streamgrid --trace-warnings ...` to show where the warning was created)
(node:979180) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)

(of course it's a minor point and not a blocker, the app is still starting)