Update mockttp & http-encoding for zstd node deprecation/crash fix

Author: pimterry

package-lock.json

@@ -96,7 +96,7 @@
     "fast-json-patch": "^3.1.1",
     "graphql": "^15.8.0",
     "har-validator": "^5.1.3",
-    "http-encoding": "^1.3.0",
+    "http-encoding": "^2.0.1",
     "js-beautify": "^1.8.8",
     "jsonwebtoken": "^8.4.0",
     "localforage": "^1.7.3",
@@ -108,7 +108,7 @@
     "mobx-shallow-undo": "^1.0.0",
     "mobx-utils": "^5.1.0",
     "mockrtc": "^0.3.1",
-    "mockttp": "^3.15.0",
+    "mockttp": "^3.15.1",
     "monaco-editor": "^0.27.0",
     "node-forge": "^1.3.0",
     "openapi-directory": "^1.3.0",