chore(deps): update dependency @types/semver to v6

chore(deps): update dependency @types/semver to v6

This PR contains the following updates:

| Package | Type | Update | Change | References |
|---|---|---|---|---|
| @​types/semver | devDependencies | major | [`^5.3.32` -> `^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) |

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#666 automerged by dpebot

Author: renovate[bot]

package.json

@@ -36,7 +36,7 @@
     "@types/pify": "^3.0.2",
     "@types/proxyquire": "^1.3.28",
     "@types/request": "^2.48.1",
-    "@types/semver": "^5.3.32",
+    "@types/semver": "^6.0.0",
     "@types/uuid": "^3.4.4",
     "changelog-maker": "^2.2.2",
     "codecov": "^3.0.4",