fix: upgrade type-fest from 4.12.0 to 4.15.0

Snyk has created this PR to upgrade type-fest from 4.12.0 to 4.15.0.

See this package in npm:
https://www.npmjs.com/package/type-fest

See this project in Snyk:
https://app.snyk.io/org/nodesecure/project/8ec6fd78-2b32-4a22-b84f-3acf0336e501?utm_source=github&utm_medium=referral&page=upgrade-pr

package.json

@@ -55,7 +55,7 @@
     "@openally/result": "^1.2.0",
     "@slimio/config": "^1.2.0",
     "lodash.merge": "^4.6.2",
-    "type-fest": "^4.3.1"
+    "type-fest": "^4.15.0"
   },
   "tsd": {
     "directory": "test/types",