Pubtools-quay

* Fixing signing issues
* Skip getting v2s1 digest for non-amd64 images
* Less skopeo login to source registry
* Tolerate get_manifest 404 in image untagger

* Add a timeout to all HTTP requests
* Removed the option for entrypoints to send UMB messages

- fixed construction of v2ch2 manifest claims

* Support v2ch2 single arch containers
* Support v2ch1 containers
* Run rollback only when all index image builds fail
* Add retries to image tagging as a part of pushes
* Skip checking for repo deprecation based on value in target settings
* Support extra source host for quay operations
* Sign V2S1 manifests
* Tag index image timestamps with permanent index image as a source

* Fix the usage of overwrite from index

* Make deprecation list functionality optional