deps: update nginx:1.29-alpine docker digest to b3c656d

Author: eclipse-apoapsis-bot

ui/docker/UI.Dockerfile

@@ -38,7 +38,7 @@ RUN pnpm install --frozen-lockfile
 RUN pnpm run build
 
 # Stage 2: Serve the app with nginx.
-FROM nginx:1.29-alpine@sha256:9dacca6749f2215cc3094f641c5b6662f7791e66a57ed034e806a7c48d51c18f
+FROM nginx:1.29-alpine@sha256:b3c656d55d7ad751196f21b7fd2e8d4da9cb430e32f646adcf92441b72f82b14
 
 # Copy the build output to the nginx html directory.
 COPY --from=build /app/dist /usr/share/nginx/html