chore(package): update @semantic-release/npm to version 7.0.5

Closes #81

Author: greenkeeper[bot]

package.json

@@ -66,7 +66,7 @@
     "@semantic-release/commit-analyzer": "^6.1.0",
     "@semantic-release/git": "^7.0.5",
     "@semantic-release/github": "^5.2.5",
-    "@semantic-release/npm": "^5.1.1",
+    "@semantic-release/npm": "^7.0.5",
     "@semantic-release/release-notes-generator": "^7.1.4",
     "all-contributors-cli": "^6.0.0",
     "commitizen": "3.0.0",