Add skip statements to all strings

runtime/syntax/gdscript.yaml

@@ -47,12 +47,14 @@ rules:
     - constant.string:
         start: "\""
         end: "\""
+        skip: "\\\\."
         rules:
             - constant.specialChar: "\\\\([0-7]{3}|x[A-Fa-f0-9]{2}|u[A-Fa-f0-9]{4}|U[A-Fa-f0-9]{8})"
 
     - constant.string:
         start: "'"
         end: "'"
+        skip: "\\\\."
         rules:
             - constant.specialChar: "\\\\([0-7]{3}|x[A-Fa-f0-9]{2}|u[A-Fa-f0-9]{4}|U[A-Fa-f0-9]{8})"