Update mongo
Update mongo

Changes:

- https://github.com/docker-library/mongo/commit/2b2185c: Update 4.4-rc to 4.4.13-rc0
- https://github.com/docker-library/mongo/commit/315b2e4: Update 4.2-rc to 4.2.19-rc0
- https://github.com/docker-library/mongo/commit/ed5764f: Merge pull request https://github.com/docker-library/mongo/pull/520 from infosiftr/signed-by
- https://github.com/docker-library/mongo/commit/a5085fb: Switch from apt-key/trusted.gpg(.d) to signed-by

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