Bump codecov action to v3
Created by: peterfpeterson
After reading the announcement about codecov getting rid of the v1 endpoint I discovered that our github-action could just be bumped to the latest version to fix it.
During the maintenance period on Monday, 14 Oct 2024, all new projects will no longer create a container registry as part of the project area. Already existing projects will be unaffected at this time. Instead, users should utilize the official ORNL container registries at camden.ornl.gov (internal/moderate) and savannah.ornl.gov (external/low). Please see ORNL Today article for more info.
Created by: peterfpeterson
After reading the announcement about codecov getting rid of the v1 endpoint I discovered that our github-action could just be bumped to the latest version to fix it.