chore(deps): bump flat-cache from 3.2.0 to 6.1.1 in /packages/node

Bumps [flat-cache](https://github.com/jaredwray/cacheable/tree/HEAD/packages/flat-cache) from 3.2.0 to 6.1.1.
- [Release notes](https://github.com/jaredwray/cacheable/releases)
- [Commits](https://github.com/jaredwray/cacheable/commits/HEAD/packages/flat-cache)

---
updated-dependencies:
- dependency-name: flat-cache
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

packages/node/package.json

@@ -27,7 +27,7 @@
   "dependencies": {
     "content-type": "^1.0.5",
     "find-cache-dir": "^3.3.2",
-    "flat-cache": "^3.0.4",
+    "flat-cache": "^6.1.1",
     "lodash": "^4.17.15",
     "ssri": "^12.0.0",
     "timeout-signal": "^1.1.0",