Update releases-docker.jfrog.io/jfrog/router Docker tag to v7.16.1

This MR contains the following updates:

Package	Type	Update	Change
releases-docker.jfrog.io/jfrog/router	ironbank-docker	minor	7.15.2 -> 7.16.1
releases-docker.jfrog.io/jfrog/router	stage	minor	7.15.2 -> 7.16.1

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