Bug#979910: node-shiny-server-client: node-uglify is deprecated in favor of uglifyjs

[yadd at debian.org]

Package: node-shiny-server-client
Severity: important

node-shiny-server-client build depends on node-uglify which is
deprecated and will be removed from bullseye (#958117), please update
your (build) dependency in favor of uglifyjs or uglifyjs.terser

https://bugs.debian.org/958117

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