Merge pull request #41 from LedgerHQ/ci-improvements #115

Job	Run time
Build vnd-test on Risc-V target	31s
Run V-App SDK tests	27s
Run V-App Client SDK tests	54s
Run common crate tests	25s
Run vnd-test app tests	28s
Run vnd-test app client tests	1m 10s
Build application using the reusable workflow / Retrieve application metadata / Retrieve application metadata	6s
Build application using the reusable workflow / Build application for NanoS, X, S+, and Stax (flex)	3m 18s
Build application using the reusable workflow / Build application for NanoS, X, S+, and Stax (stax)	3m 19s
Build application using the reusable workflow / Build application for NanoS, X, S+, and Stax (nanosp)	3m 23s
Build application using the reusable workflow / Merge build artifacts	3s
Integration tests on Speculos (nanosplus)	2m 38s
Integration tests on Speculos (flex)	2m 32s
Integration tests on Speculos (stax)	2m 22s
	21m 36s

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