chore: update cross-spawn

BREAKING CHANGE: drop support for Node.js < 8

Author: nodkz

packages/mongodb-memory-server-core/package.json

@@ -44,7 +44,7 @@
   },
   "dependencies": {
     "camelcase": "^5.3.1",
-    "cross-spawn": "^6.0.5",
+    "cross-spawn": "^7.0.1",
     "debug": "^4.1.1",
     "decompress": "^4.2.0",
     "dedent": "^0.7.0",

yarn.lock

@@ -2286,7 +2286,7 @@ cross-spawn@^6.0.0, cross-spawn@^6.0.5:
     shebang-command "^1.2.0"
     which "^1.2.9"
 
-cross-spawn@^7.0.0:
+cross-spawn@^7.0.0, cross-spawn@^7.0.1:
   version "7.0.1"
   resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-7.0.1.tgz#0ab56286e0f7c24e153d04cc2aa027e43a9a5d14"
   integrity sha512-u7v4o84SwFpD32Z8IIcPZ6z1/ie24O6RU3RbtL5Y316l3KuHVPx9ItBgWQ6VlfAFnRnTtMUrsQ9MUUTuEZjogg==