[actions] Sync lesson with carpentries/styles

        id: check-rmd

        working-directory: lesson

        run: |

          echo "::set-output name=count::$(shopt -s nullglob; files=($(find . -iname '*.Rmd')); echo ${#files[@]})"

          echo "count=$(shopt -s nullglob; files=($(find . -iname '*.Rmd')); echo ${#files[@]})" >> $GITHUB_OUTPUT

      - name: Set up R

        if: steps.check-rmd.outputs.count != 0

        uses: r-lib/actions/setup-r@master

        uses: r-lib/actions/setup-r@v2

        with:

          r-version: 'release'

          use-public-rspm: true

          install-r: false

      - name: Install needed packages

        if: steps.check-rmd.outputs.count != 0

      - name: Look for R-markdown files

        id: check-rmd

        run: |

          echo "::set-output name=count::$(shopt -s nullglob; files=($(find . -iname '*.Rmd')); echo ${#files[@]})"

          echo "count=$(shopt -s nullglob; files=($(find . -iname '*.Rmd')); echo ${#files[@]})" >> $GITHUB_OUTPUT

      - name: Set up R

        if: steps.check-rmd.outputs.count != 0

        uses: r-lib/actions/setup-r@master

        uses: r-lib/actions/setup-r@v2

        with:

          r-version: 'release'

          use-public-rspm: true

          install-r: false

      - name: Restore R Cache

        if: steps.check-rmd.outputs.count != 0

{% assign date = include.need_transition_date %}

{% if date == "true" %}

{% unless site.transition_date_prebeta %}

<div class="alert alert-danger">

  you need to specify the variable <code>transition_date_prebeta</code>

  in <code>_config.yml</code>.

</div>

{% endunless %}

{% unless site.transition_date_beta %}

<div class="alert alert-danger">

  you need to specify the variable <code>transition_date_beta</code>

  in <code>_config.yml</code>.

</div>

{% endunless %}

{% unless site.transition_date_prerelease %}

<div class="alert alert-danger">

  you need to specify the variable <code>transition_date_prerelease</code>

  in <code>_config.yml</code>.

</div>

{% endunless %}

{% endif %}

	{% endif %}

    </div>

    <div class="col-md-6 help-links" align="right">

	{% if page.source %}

	{% if page.source == "Rmd" %}

    {% if site.life_cycle == 'transition-step-2' %}

    <a href="{{repo_url}}">Edit on GitHub</a>

    {% elsif page.source == "Rmd" %}

    <a href="{{repo_url}}/edit/{{ default_branch }}/{{page.path|replace: "_episodes", "_episodes_rmd" | replace: ".md", ".Rmd"}}" data-checker-ignore>Edit on GitHub</a>

	{% endif %}

    {% else %}

    <a href="{{repo_url}}/edit/{{ default_branch }}/{{page.path}}" data-checker-ignore>Edit on GitHub</a>

    {% endif %}

{% elsif site.life_cycle == "stable" %}

{% comment %}

We do not do anything special unless this is a Carpentries Lab lesson

We do not do anything special for lessons in stable

{% endcomment %}

{% comment %}

Below we cover the 2 phases of lesson transition towards the Carpentries Workbench:

Variables needed:

  - transition_date_prebeta: the date of the prebeta stage

  - transition_date_beta: the date of the beta stage

  - transition_date_prerelease: the date of the prerelease stage

- transition-step-1: We notify that there is a snapshot of the lesson available for testing, and that it will supersede this version.

- transition-step-2 We indicate that this version of the lesson is a snapshot and a new version of the lesson is avaiable and will supersede this version at a given date.

{% endcomment %}

{% elsif site.life_cycle == "transition-step-1" %}

{% include check_transition_variables.html need_transition_date = 'true' %}

<div class="alert alert-warning life-cycle">

  A snapshot of this lesson from {{ site.transition_date_prebeta }} is being tested on

  <a href='https://carpentries.github.io/workbench'>The Carpentries Workbench</a>:

  <a href="https://preview.carpentries.org/{{ repo_name }}">https://preview.carpentries.org/{{ repo_name }}</a>.

  <br>

  <b>The Workbench version of this lesson will become default on {{ site.transition_date_prerelease }}</b>.

  <button type="button" style="border: true; position: absolute; top: 10px; right: 27px; color: #383838;" class="close" data-dismiss="alert" aria-label="Close">

    <span aria-hidden="true" style='font-size:34pt'>&times;</span>

  </button>

</div>

{% elsif site.life_cycle == "transition-step-2" %}

{% include check_transition_variables.html need_transition_date = 'true' %}

<div class="alert alert-danger alert-dismissible life-cycle" role="alert">

  This lesson is a <b>snapshot from {{ site.transition_date_beta }}</b>.

  A newer version is being tested on <a href='https://carpentries.github.io/workbench'>The Carpentries Workbench</a>:

  <a href="https://preview.carpentries.org/{{ repo_name }}">https://preview.carpentries.org/{{ repo_name }}</a>.

  <br>

  <b>The Workbench version of this lesson will become default on {{ site.transition_date_prerelease }}</b>.

  <button type="button" style="border: true; position: absolute; top: 10px; right: 27px; color: #383838;" class="close" data-dismiss="alert" aria-label="Close">

    <span aria-hidden="true" style='font-size:34pt'>&times;</span>

  </button>

</div>

{% endif %}

{% comment %}

For Carpentries Lab lessons we add a banner about the review status

{% endcomment %}

{% if site.carpentry == "lab" %}

  </div>

</div>

{% endif %}

{% endif %}