build

External merge tools: better error message for unsupported usage #10864

Job	Run time
Check formatting	16s
build (ubuntu-latest)	3m 47s
Check protos	35s
build (macos-14)	3m 12s
build (windows-latest)	8m 40s
cargo-deny (advisories)	27s
build (ubuntu-latest, --all-features)	5m 3s
cargo-deny (bans licenses sources)	29s
Clippy check	2m 28s
Check that MkDocs can build the docs	24s
Check that MkDocs can build the docs with Poetry 1.3.2	40s
	26m 1s

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