fix(backstage): bump image to 53692a6 (keycloak-auth plugin registration fix)

[emmanuelbruno]

Bump the Backstage image to 53692a629fc8a9b46bb702e4d18a7dac0e4187f4 and refresh the valueURL (?v=14 -> ?v=15).

Why

Frontend crashed with: NotImplementedError: No implementation available for apiRef{auth.keycloak}
Root cause: App.tsx registered keycloak auth via createFrontendModule({apis:[...]}), but createFrontendModule (module 25111) has NO apis field and silently drops it. In v1.53.1, ApiBlueprints are registered via the extensions array of a plugin (createFrontendPlugin), as in the upstream example (plugins/app/src/plugin.ts).

Fix (built in the image, this PR only points gitops at it)

Replace createFrontendModule({pluginId:'app', apis:[keycloakAuthApi], extensions:[keycloakSignInPage]}) with createFrontendPlugin({pluginId:'keycloak-auth', extensions:[keycloakAuthApi, keycloakSignInPage]}).

Verification done

• New bundle main.6e141671999e.js built (yarn workspace example-app build, no TS errors).
• Bytecode confirmed: (0,F._)({pluginId:"keycloak-auth",extensions:[is,io]}) — plugin form, no dropped apis:[.
• Woodpecker pipeline chore(deps): update ghcr.io/open-telemetry/opentelemetry-operator/target-allocator docker tag to v0.158.0 #10 (bruno/backstage) SUCCESS -> harbor.ebruno.fr/library/backstage:53692a629fc8a9b46bb702e4d18a7dac0e4187f4 + :latest.

Changes

• helm/releases/backstage/values.yaml: tag c8fdb5d... -> 53692a629fc8a9b46bb702e4d18a7dac0e4187f4
• bootstrap/appset-helm.yaml: backstage valueURL ?v=14 -> ?v=15

[Copilot]

🟢 Approval recommended

No unresolved review issues were identified.

Pull request overview

Updates Backstage to the image containing the Keycloak auth plugin registration fix and refreshes ArgoCD’s values cache-buster.

Changes:

• Bumps the Backstage image tag.
• Changes the values URL from ?v=14 to ?v=15.

File summaries

File	Description
helm/releases/backstage/values.yaml	Updates the Backstage image tag.
bootstrap/appset-helm.yaml	Refreshes the remote values URL cache-buster.

Review details

• Files reviewed: 2/2 changed files
• Comments generated: 0
• Review effort level: Lite

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