chore: Upgrade ava to 5

Author: kriskowal

package.json

@@ -58,7 +58,7 @@
     "@endo/promise-kit": "^1.1.13",
     "@endo/ses-ava": "^1.3.2",
     "@typescript-eslint/parser": "^4.33.0",
-    "ava": "^4.3.3",
+    "ava": "^6.4.1",
     "eslint": "^7.32.0",
     "eslint-config-airbnb-base": "^14.2.1",
     "eslint-config-jessie": "^0.0.6",