chore(package): update @microsoft/api-extractor to version 7.8.0

Closes #76

Author: greenkeeper[bot]

package.json

@@ -72,7 +72,7 @@
     "@commitlint/cli": "^8.3.5",
     "@commitlint/config-conventional": "^8.3.4",
     "@microsoft/api-documenter": "^7.7.12",
-    "@microsoft/api-extractor": "~7.4.7",
+    "@microsoft/api-extractor": "~7.8.0",
     "@react-native-community/eslint-config": "^0.0.7",
     "@semantic-release/changelog": "^5.0.0",
     "@semantic-release/commit-analyzer": "^8.0.1",