chore(deps): bump cacheable-request and ava in /shared

Removes [cacheable-request](https://github.com/jaredwray/cacheable-request). It's no longer used after updating ancestor dependency [ava](https://github.com/avajs/ava). These dependencies need to be updated together.


Removes `cacheable-request`

Updates `ava` from 2.4.0 to 5.2.0
- [Release notes](https://github.com/avajs/ava/releases)
- [Commits](https://github.com/avajs/ava/compare/v2.4.0...v5.2.0)

---
updated-dependencies:
- dependency-name: cacheable-request
  dependency-type: indirect
- dependency-name: ava
  dependency-type: direct:development
...

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

shared/package.json

@@ -8,7 +8,7 @@
   },
   "dependencies": {},
   "devDependencies": {
-    "ava": "^2.4.0",
+    "ava": "^5.2.0",
     "ts-node": "^8.4.1"
   },
   "ava": {