Deployments now show service config and a diff of config changes

ElastiCache Valkey now supported in addition to Redis.
Valkey is AWS's fork of Redis with improved performance and reduced cost. It's a drop in replacement.
Deploy specific docker image tags or shas with Create Deployment API
New Lambda config option injectEnvVariablesInRuntime to disable our default env var injection (docs)
Improve performance of jobs execution page when you have thousands of executions
Improve some deploy error messages
Fix environment duplication to include plain text env vars and service level env vars
Don't allow empty start command for scheduler jobs
Fix "Deploy this commit" does not use correct image for image registry build type
Misc fixes