Adds "security.txt" (RFC 9116)

.well-known/security.txt

@@ -0,0 +1,9 @@
+---
+layout: null
+regenerate: true
+---
+Contact: mailto:security@forestier.app
+Expires: {{ "now" | date: "%s" | plus: 31536000 | date: "%Y-%m-%dT00:00:00.000Z" }}
+Encryption: https://keybase.io/horlogeskynet/pgp_keys.asc?fingerprint=2ae0cbb8f4e0a474cc696ccf4b6fa04b1ac95dd4
+Preferred-Languages: en, fr
+Canonical: {{ page.url | absolute_url }}

_config.yml

@@ -81,6 +81,8 @@ autopages:
 ## __________ ##
 
 ## BUILD OPTIONS ##
+include:
+  - .well-known
 exclude:
   - README.md
 incremental: false  # Waiting for [jekyll/jekyll#4112].