chore(deps): update dependency execa to v5 (#201)

Co-authored-by: Renovate Bot <bot@renovateapp.com>

Author: renovate[bot]

package.json

@@ -48,7 +48,7 @@
     "c8": "^7.0.0",
     "chai": "^4.2.0",
     "codecov": "^3.6.1",
-    "execa": "^4.0.0",
+    "execa": "^5.0.0",
     "gts": "^3.0.0",
     "mocha": "^8.0.0",
     "nock": "^13.0.0",