Fix build.yml: disable updater plugin to skip signing key requirement

CI build doesn't need updater artifacts or signing. Disable both
createUpdaterArtifacts and the updater plugin to avoid requiring
TAURI_SIGNING_PRIVATE_KEY.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: CodeGhost21

.github/workflows/build.yml

@@ -135,7 +135,7 @@ jobs:
       - name: Build Tauri app
         working-directory: app
         run: |
-          TAURI_CONFIG_OVERRIDE='{"bundle":{"createUpdaterArtifacts":false}}'
+          TAURI_CONFIG_OVERRIDE='{"bundle":{"createUpdaterArtifacts":"never"},"plugins":{"updater":{"active":false}}}'
           yarn tauri build -c "$TAURI_CONFIG_OVERRIDE" --bundles none --target ${{ matrix.settings.target }} -- -- --bin OpenHuman
         env:
           NODE_ENV: production