chore(deps): update dependency semantic-release to v15.6.0 (#301)

Author: renovate[bot]

package.json

@@ -59,7 +59,7 @@
     "rollup-plugin-node-resolve": "3.3.0",
     "rollup-plugin-replace": "2.0.0",
     "rollup-plugin-terser": "1.0.1",
-    "semantic-release": "15.5.5",
+    "semantic-release": "15.6.0",
     "tslint": "5.10.0",
     "tslint-config-prettier": "1.13.0",
     "typescript": "2.9.2"

yarn.lock

@@ -3986,9 +3986,9 @@ sax@^1.2.4:
   version "1.2.4"
   resolved "https://registry.yarnpkg.com/sax/-/sax-1.2.4.tgz#2816234e2378bddc4e5354fab5caa895df7100d9"
 
-semantic-release@15.5.5:
-  version "15.5.5"
-  resolved "https://registry.yarnpkg.com/semantic-release/-/semantic-release-15.5.5.tgz#d4d9ccc5feb108b630493d6fa41e43ed5478373c"
+semantic-release@15.6.0:
+  version "15.6.0"
+  resolved "https://registry.yarnpkg.com/semantic-release/-/semantic-release-15.6.0.tgz#4ab08683bb02ba85e0e7d3aeae75caa61dedd632"
   dependencies:
     "@semantic-release/commit-analyzer" "^5.0.0"
     "@semantic-release/error" "^2.2.0"