R CMD check found ERRORs

Process completed with exit code 1.

Failed to CreateArtifact: Received non-retryable error: Failed request: (409) Conflict: an artifact with this name already exists on the workflow run

file 'rstanarm/cleanup' did not have execute permissions: corrected

The following actions uses node12 which is deprecated and will be forced to run on node16: n1hility/cancel-previous-runs@v2. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/

The following actions use a deprecated Node.js version and will be forced to run on node20: n1hility/cancel-previous-runs@v2, actions/checkout@v3. For more info: https://github.blog/changelog/2024-03-07-github-actions-all-actions-will-run-on-node20-instead-of-node16-by-default/