cli: duplicate: deprecate positional revisions argument #16885

Job	Run time
Build jj-lib without Git support	49s
cargo-deny (advisories)	24s
build (ubuntu-latest)	4m 53s
cargo-deny (bans licenses sources)	26s
Check protos	23s
build (macos-13)	6m 3s
build (macos-14)	4m 53s
Clippy check	2m 33s
build (windows-latest)	10m 27s
Check that MkDocs can build the docs	12s
build (ubuntu-latest, --all-features)	6m 0s
Check that MkDocs can build the docs with latest Python and uv	13s
Check formatting	20s
	37m 36s

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