feat: use Christmas logo

Details:
- The whole December is a Christmas month!
  Remove back after December 31th.

Co-authored-by: Drowning Cat <[email protected]>

Author: echasnovski

_quarto.yml

@@ -10,9 +10,9 @@ website:
   favicon: /assets/logo-mini_180x180.png
 
   open-graph:
-    image: /assets/logo-mini_social.png
+    image: /assets/logo-mini_xmas-social.png
   twitter-card:
-    image: /assets/logo-mini_social.png
+    image: /assets/logo-mini_xmas-social.png
 
   navbar:
     search: true

assets/logo-mini_xmas-social.png

@@ -2,7 +2,7 @@
 title: "MINI"
 about:
   template: trestles
-  image: assets/logo-mini.png
+  image: assets/logo-mini_xmas.png
   image-shape: rectangle
   image-alt: "Word \"MINI\" written in 3x5 pixel font; \"MI\" over \"NI\""
 format: