We are using an outdated base image for must gather in 1.16.2 which has caused degraded container health. Update the image to registry.redhat.io/openshift4/ose-must-gather:v4.14.0 or latest

Approach:

• Update the version in https://github.com/redhat-developer/gitops-must-gather 
• Update the tag in release configs: https://github.com/rh-gitops-midstream/release/blob/c743c313fceb85c9142bd33b39d183a14917bc04/config.yaml#L90-L106 
• During the PR review this change have been discarded, regarding this section is for external images directly pulled by the operator. ose-must-gather is only used as a base image for gitops-must-gather, so it doesn’t need to be listed. The only change in release repo regarding this version update is modify the Dockerfile reference to must-gather: .https://github.com/rh-gitops-midstream/release/blob/main/containers/must-gather/Dockerfile#L16