Interpolation can contain expression list. Fix for bootstrap 5.3.0.

Author: volker

src/main/java/com/inet/sass/parser/ScssParser.java

@@ -1747,7 +1747,7 @@ private boolean parseInterpolation( StringBuilder builder ) {
 
         int line = reader.getLine();
         int column = reader.getColumn();
-        SassListItem item = parseExpression( true );
+        SassListItem item = parseExpressionOrList();
         sequence.add( new Interpolation( item, line, column ) );
         consumeMarker( '}' );
         stringSequence = sequence;

src/test/resources/automatic/css/interpolation-expression.css

@@ -5,6 +5,7 @@
     ident-interpolation: -first-4-second--18;
     slash-not-as-division: 10/5;
     slash-as-division: 2;
+     trans: transform 5;
 }
 
 #idSelector-1 {

src/test/resources/automatic/scss/interpolation-expression.scss

@@ -9,6 +9,7 @@
     ident-interpolation: -first-#{$x + $y + $z}-second-#{-(floor($w) + ceil($w)) * abs($z * ceil($w))};
     slash-not-as-division: #{10/5};
     slash-as-division: #{10/$x};
+    trans: #{transform $x};
 }
 
 $sel: "Sel";