build(deps-dev): update execa requirement from ^0.10.0 to ^1.0.0

Updates the requirements on [execa](https://github.com/sindresorhus/execa) to permit the latest version.
- [Release notes](https://github.com/sindresorhus/execa/releases)
- [Commits](https://github.com/sindresorhus/execa/commits/v1.0.0)

Signed-off-by: dependabot[bot] <support@dependabot.com>

package.json

@@ -23,7 +23,7 @@
     "chai": "^4.1.1",
     "chai-as-promised": "^7.1.1",
     "concurrently": "^4.0.1",
-    "execa": "^0.10.0",
+    "execa": "^1.0.0",
     "glob": "^7.1.1",
     "jasmine": "^3.1.0",
     "jasmine-core": "^3.1.0",