fix(deps): update dependency semver to v6

fix(deps): update dependency semver to v6

This PR contains the following updates:

| Package | Type | Update | Change | References |
|---|---|---|---|---|
| semver | dependencies | major | [`^5.4.1` -> `^6.0.0`](https://diff.intrinsic.com/semver/5.7.0/6.0.0) | [source](https://togithub.com/npm/node-semver) |
| @​types/semver | devDependencies | major | [`^5.4.0` -> `^6.0.0`](https://diff.intrinsic.com/@types/semver/5.5.0/6.0.0) | [source](https://togithub.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/semver) |

---

### Release Notes

<details>
<summary>npm/node-semver</summary>

### [`v6.0.0`](https://togithub.com/npm/node-semver/compare/v5.7.0...v6.0.0)

[Compare Source](https://togithub.com/npm/node-semver/compare/v5.7.0...v6.0.0)

</details>

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#990 automerged by dpebot

package.json

@@ -67,7 +67,7 @@
     "@types/pify": "^3.0.0",
     "@types/proxyquire": "^1.3.28",
     "@types/request": "^2.48.1",
-    "@types/semver": "^5.4.0",
+    "@types/semver": "^6.0.0",
     "@types/shimmer": "^1.0.1",
     "@types/tmp": "0.1.0",
     "@types/uuid": "^3.4.3",
@@ -108,7 +108,7 @@
     "is": "^3.2.0",
     "methods": "^1.1.1",
     "require-in-the-middle": "^4.0.0",
-    "semver": "^5.4.1",
+    "semver": "^6.0.0",
     "shimmer": "^1.2.0",
     "teeny-request": "^3.11.1",
     "uuid": "^3.0.1"