feat(versions): add mention to EOL versions and a source link (#449)

## Describe your PR

This PR adds a mention to every end-of-life versions in the YAML and a
sentence explaining `EOL` acronym to shortcode, with a link to lifecycle
info source.

data/runtime_versions.yml

@@ -2,59 +2,63 @@ node:
   default:
   - "v20.15.0"
 PHP:
+  eol_source: "https://www.php.net/supported-versions.php"
   default:
     - "8.3"
   accepted:
-    - "5.6"
-    - "7"
-    - "7.2"
-    - "7.3"
-    - "7.4"
+    - "5.6 (EOL)"
+    - "7 (EOL)"
+    - "7.2 (EOL)"
+    - "7.3 (EOL)"
+    - "7.4 (EOL)"
     - "8"
-    - "8.0"
+    - "8.0 (EOL)"
     - "8.1"
     - "8.2"
     - "8.3"
 python:
+  eol_source: "https://devguide.python.org/versions/#python-release-cycle"
   default:
     - "3.12"
   accepted:
     - "2"
     - "3"
-    - "3.7 (deprecated)"
-    - "3.8"
+    - "3.7 (EOL)"
+    - "3.8 (EOL)"
     - "3.9"
     - "3.10"
     - "3.11"
     - "3.12"
 dotnet:
+  eol_source: "https://dotnet.microsoft.com/en-us/platform/support/policy/dotnet-core"
   default:
-    - "6.0"
+    - "6.0 (EOL)"
   accepted:
     - "8.0"
 elixir:
+  eol_source: "https://hexdocs.pm/elixir/compatibility-and-deprecations.html"
   default:
-    - "1.16"
     - "1.17"
   accepted:
-    - "1.8"
-    - "1.9"
-    - "1.10"
-    - "1.11"
-    - "1.12"
+    - "1.8 (EOL)"
+    - "1.9 (EOL)"
+    - "1.10 (EOL)"
+    - "1.11 (EOL)"
+    - "1.12 (EOL)"
     - "1.13"
     - "1.14"
     - "1.15"
     - "1.16"
 java:
+  eol_source: "https://www.oracle.com/fr/java/technologies/java-se-support-roadmap.html"
   default:
     - "11"
   accepted:
-    - "22"
     - "23"
+    - "22 (EOL)"
     - "21"
     - "17"
     - "11"
     - "8"
-    - "7"
+    - "7 (EOL)"
     - "graalvm-ce"

layouts/shortcodes/runtimes_versions.html

@@ -46,4 +46,5 @@
         {{ end }}
       </tbody>
     </table>
+    <p>The <a href="{{ .eol_source }}">end-of-life (EOL)</a> versions are marked as such.</p>
 {{ end }}