The 'deprecated Node.js' warnings

[trivikr]

The following warning is shown when using tibdex/backport@v2

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

[trivikr]

Update node version to 20 and release v3? https://github.com/tibdex/backport/blob/7005ef85c4562bc23b0e9b4a9940d5922f439750/action.yml#L53