Bugfixes
- Fixed an HTTP 404 response during sync from registry.redhat.io.
[974](https://github.com/pulp/pulp_container/issues/974)
- Introduced the `pulpcore-manager container-repair-media-type` command to fix incorrect media
types of manifests that could have been stored in the database as a result of a sync task.
[977](https://github.com/pulp/pulp_container/issues/977)
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