refactor: allow ES import for cloud string if package type is module (#7560)

* allow module import for Parse Cloud

* Update .babelrc

* catch esm error

* Update ParseServer.js

* add tests

* Update CHANGELOG.md

* Update CloudCode.spec.js

Co-authored-by: Manuel <5673677+mtrezza@users.noreply.github.com>

.babelrc

@@ -7,7 +7,8 @@
         ["@babel/preset-env", {
             "targets": {
                 "node": "12"
-            }
+            },
+            "exclude": ["proposal-dynamic-import"]
         }]
     ],
     "sourceMaps": "inline"