fix(deps): update dependency execa to v1

Author: renovate-bot

package.json

@@ -250,7 +250,7 @@
     "common-tags": "1.8.0",
     "conventional-changelog-lint-config-angular": "1.0.0",
     "decko": "1.2.0",
-    "execa": "0.11.0",
+    "execa": "1.0.0",
     "https": "1.0.0",
     "isomorphic-fetch": "2.2.1",
     "lru-cache": "4.1.3",

yarn.lock

@@ -863,9 +863,9 @@ event-stream@^3.3.1, event-stream@^3.3.4, event-stream@~3.3.4:
     stream-combiner "~0.0.4"
     through "~2.3.1"
 
-execa@0.11.0:
-  version "0.11.0"
-  resolved "https://registry.yarnpkg.com/execa/-/execa-0.11.0.tgz#0b3c71daf9b9159c252a863cd981af1b4410d97a"
+execa@1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/execa/-/execa-1.0.0.tgz#c6236a5bb4df6d6f15e88e7f017798216749ddd8"
   dependencies:
     cross-spawn "^6.0.0"
     get-stream "^4.0.0"