Add URL to icalendar descriptions

* Because Google doesn't support the URL property.
* Update GitHub actions' versions.

Author: samwilson

.github/workflows/test.yml

@@ -10,18 +10,18 @@ jobs:
     steps:
 
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v5
 
       - name: Setup Ruby
-        uses: ruby/setup-ruby@55283cc23133118229fd3f97f9336ee23a179fcf # v1.146.0
+        uses: ruby/setup-ruby@v1
         with:
           ruby-version: '3.1'
           bundler-cache: true
           cache-version: 0
 
       - name: Setup Pages
         id: pages
-        uses: actions/configure-pages@v3
+        uses: actions/configure-pages@v5
 
       - name: Build with Jekyll
         run: bundle exec jekyll build --baseurl "${{ steps.pages.outputs.base_path }}"

_layouts/ical.ics

@@ -24,7 +24,7 @@ DURATION:PT2H{% endif %}
 LOCATION:{{ event.location.name }}{% if event.location.address %}, {{ event.location.address }}{% endif %}{% if event.location.latitude and event.location.longitude %}
 GEO:{{ event.location.latitude }};{{ event.location.longitude }}{% endif %}
 DESCRIPTION:{{ event.content | strip_html | replace: "
-", "\n" | strip }}
-X-ALT-DESC;FMTTYPE=text/html:{{ event.content | strip_newlines | normalise_whitespace | strip}}
+", "\n" | strip }}\n\nEvent link: {{ event.url | prepend: site.website }}
+X-ALT-DESC;FMTTYPE=text/html:{{ event.content | strip_newlines | normalise_whitespace | strip}}<p>Event link: <a href="{{ event.url | prepend: site.website }}">{{ event.url | prepend: site.website }}</a></p>
 END:VEVENT{% endfor %}
 END:VCALENDAR