feat(sql): highlight bind parameter delimiters

Iron-E · Iron-E · commit 23b0c806f660 · 2023-05-30T20:37:24.000-04:00
diff --git a/after/queries/sql/highlights.scm b/after/queries/sql/highlights.scm
@@ -26,3 +26,6 @@
 	(keyword_as)
 	(keyword_cast)
 ] @keyword.operator
+
+; punctuation
+(parameter "$" @punctuation.special)
