deps: drop fs-extra aws#5803

## Problem
Follow up from
aws#5761 (comment).

## Solution
`npm uninstall --save '@types/fs-extra' 'fs-extra' -w packages/core/`

Author: Hweinstock

package-lock.json

@@ -411,7 +411,6 @@
         "@types/circular-dependency-plugin": "^5.0.8",
         "@types/cross-spawn": "^6.0.6",
         "@types/diff": "^5.0.7",
-        "@types/fs-extra": "^9.0.11",
         "@types/glob": "^8.1.0",
         "@types/js-yaml": "^4.0.5",
         "@types/jsdom": "^21.1.6",
@@ -488,7 +487,6 @@
         "cross-fetch": "^4.0.0",
         "cross-spawn": "^7.0.3",
         "fast-json-patch": "^3.1.1",
-        "fs-extra": "^10.0.1",
         "glob": "^10.3.10",
         "got": "^11.8.5",
         "highlight.js": "^11.9.0",