Merge branch 'main' into next

# Conflicts:
#	package.json
#	scripts/release/yarn.lock
#	src/language-css/parser-postcss.js
#	src/language-css/printer-postcss.js
#	src/language-js/print/jsx.js
#	src/language-json/printer-estree-json.js
#	website/yarn.lock
#	yarn.lock

src/language-css/printer-postcss.js

@@ -87,7 +87,10 @@ function genericPrint(path, options, print) {
       return [node.raw, hardline];
     case "css-root": {
       const nodes = printNodeSequence(path, options, print);
-      const after = node.raws.after.trim();
+      let after = node.raws.after.trim();
+      if (after.startsWith(";")) {
+        after = after.slice(1).trim();
+      }
 
       return [
         node.frontMatter ? [print("frontMatter"), hardline] : "",
@@ -144,7 +147,11 @@ function genericPrint(path, options, print) {
 
       return [
         node.raws.before.replaceAll(/[\s;]/g, ""),
-        insideICSSRuleNode(path) ? node.prop : maybeToLowerCase(node.prop),
+        // Less variable
+        (parentNode.type === "css-atrule" && parentNode.variable) ||
+        insideICSSRuleNode(path)
+          ? node.prop
+          : maybeToLowerCase(node.prop),
         trimmedBetween.startsWith("//") ? " " : "",
         trimmedBetween,
         node.extend || isValueAllSpace ? "" : " ",