Path traversal allows leaking out-of-bound Helm charts from Argo CD repo-server

Impact In Argo CD versions prior to 2.3 starting at least in v0.1.0, but likely in any version using Helm before 2.3, using a specifically-crafted Helm file could reference external Helm charts handled by the same repo-server to leak values, or files from the referenced Helm Chart. This was...