gitlab-ci: Use Werror for the cross build
We allow the build to fail since we're mostly interested in the debs but this should alert us when builds throw errors. Signed-off-by: Guido Günther <guido.gunther@puri.sm>
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We allow the build to fail since we're mostly interested in the debs but this should alert us when builds throw errors. Signed-off-by: Guido Günther <guido.gunther@puri.sm>