Update dependency sinon to v7.5.0 (#507)

Author: renovate[bot]

package-lock.json

@@ -53,7 +53,7 @@
     "portfinder": "1.0.24",
     "selenium-assistant": "5.4.0",
     "semver": "6.3.0",
-    "sinon": "7.4.2",
+    "sinon": "7.5.0",
     "which": "1.3.1"
   },
   "engines": {