[demo] release 1.11.0

[rogercoll]

1. The OpenTelemetry demo replaced the Redis usage in favor of Valkey: [Valkey] Replace Redis with Valkey opentelemetry-demo#1619

The current helm chart needs to be updated before next OpenTelemetry demo release. If used demo's nightly image for the deployment, the following error arised for the cartservice pod:

Defaulted container "cartservice" out of: cartservice, wait-for-redis (init)
VALKEY_ADDR environment variable is required.

2. Increase memory limit for account service: https://github.com/open-telemetry/opentelemetry-demo/pull/1538/files#diff-e45e45baeda1c1e73482975a664062aa56f20c03dd9d64a827aba57775bed0d3R32

[rogercoll]

Test are not passing because it's not using nightly demo images. Should we merge/release this once the new demo images are generated?

[julianocosta89]

This change should take affect just after a new Demo version is released.