memfs declares outdated @jsonjoy.com/json-pack and @jsonjoy.com/util dependencies it doesn't use

[alexandrucojocaru-creatopy]

memfs@4.57.1 declares two direct dependencies on old 1.x versions of @jsonjoy.com packages:

"@jsonjoy.com/json-pack": "^1.11.0",
"@jsonjoy.com/util": "^1.9.0"

However, memfs's own source code does not import either of these packages. It only imports @jsonjoy.com/fs-node, @jsonjoy.com/fs-core, and @jsonjoy.com/fs-node-utils.

The only actual consumer of @jsonjoy.com/json-pack and @jsonjoy.com/util in the memfs ecosystem is @jsonjoy.com/fs-snapshot@4.57.1, which already declares them at ^17.65.0:

"@jsonjoy.com/json-pack": "^17.65.0",
"@jsonjoy.com/util": "^17.65.0"

This creates a dependency tree with both 1.x and 17.x versions of the same packages:

memfs@4.57.1
├── @jsonjoy.com/json-pack@1.21.0        ← from memfs's own deps (unused)
│   └── @jsonjoy.com/util@1.9.0
├── @jsonjoy.com/util@1.9.0              ← from memfs's own deps (unused)
└── @jsonjoy.com/fs-snapshot@4.57.1
    ├── @jsonjoy.com/json-pack@17.67.0   ← actually used
    └── @jsonjoy.com/util@17.67.0        ← actually used

I think the old, unused dependencies should be removed so that memfs has a valid and clean dependency tree.