Remove deprecated syntax (#6561)

* Remove deprecated syntax

Signed-off-by: Nick Cameron <nrc@ncameron.org>

* fix one test

* fix sketch on revolved face test

* fix test: empty-scene default-planes act as expected

* fix up more tests

* another fix

* remove another const

---------

Signed-off-by: Nick Cameron <nrc@ncameron.org>
Co-authored-by: Kurt Hutten Irev-Dev <k.hutten@protonmail.ch>

rust/kcl-lib/src/lsp/tests.rs

@@ -1573,10 +1573,10 @@ async fn test_kcl_lsp_semantic_tokens_with_modifiers() {
   |> close()
   |> extrude(length = 3.14)
 
-thing = {blah: "foo"}
+thing = {blah = "foo"}
 bar = thing.blah
 
-fn myFn = (param1) => {
+fn myFn(param1) {
     return param1
 }"#
                 .to_string(),