use avajs v5

Author: sosnovsky

.github/dependabot.yml

@@ -26,6 +26,8 @@ updates:
       # https://github.com/FlowCrypt/flowcrypt-browser/pull/3961#issuecomment-921335748
       - dependency-name: "iso-8859-2"
         versions: [ ">=1.0.1" ]
+      - dependency-name: "ava"
+        update-types: ["version-update:semver-major"]
       - dependency-name: "chai"
         update-types: ["version-update:semver-major"]
       - dependency-name: "chai-as-promised"