Fix R-CMD-check: update deprecated actions and retired ubuntu-20.04 runner - #795

EHR ==> HER

EHR ==> HER

EHR ==> HER

EHR ==> HER

EHR ==> HER

infarction ==> infraction

infarction ==> infraction

infarction ==> infraction

EHR ==> HER

te ==> the, be, we, to

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v3. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

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