[Glitch] Upgrade to Stylelint 15 with Prettier

Port 0c9d455ea5 to glitch-soc

Signed-off-by: Claire <claire.github-309c@sitedethib.com>

app/javascript/flavours/glitch/styles/components/privacy_policy.scss

@@ -85,14 +85,14 @@
     counter-increment: list-counter;
 
     &::before {
-      content: counter(list-counter) ".";
+      content: counter(list-counter) '.';
       position: absolute;
       left: 0;
     }
   }
 
   ul > li::before {
-    content: "";
+    content: '';
     position: absolute;
     background-color: $darker-text-color;
     border-radius: 50%;