chore: move @frp-ts/test-utils to dev dependencies

[tamazlykar]

Hi, last build of @frp-ts/react@1.0.0-beta.0 has next peerDeps:

"peerDependencies": {
    "@types/react": ">=16.0.0",
    "react": ">=16.0.0",
    "tslib": "^2.3.1",
    "@frp-ts/test-utils": "1.0.0-beta.0"
  },

where @frp-ts/test-utils is a private, non publisable library.

So when I tired to install it i got next error:

I take a look for other packages and add changes to packages where NX add this libs as a peer.

[nx-cloud[bot]]

☁️ Nx Cloud Report

CI is running/has finished running commands for commit ef5f50caeb3d6dccc65727b53099315e55382576. As they complete they will appear below. Click to see the status, the terminal output, and the build insights.

📂 See all runs for this branch

---

✅ Successfully ran 3 targets

- [`nx affected --target=test --parallel --max-parallel=2`](https://nx.app/runs/6ybfPFcv5FF) - [`nx affected --target=lint --parallel --max-parallel=3`](https://nx.app/runs/TMZG72WYcYM) - [`nx affected --target=build --parallel --max-parallel=3`](https://nx.app/runs/BP4jDZNs4Pb)

---

Sent with 💌 from NxCloud.

[tamazlykar]

Alternatively you can set updateBuildableProjectDepsInPackageJson to false in your executor's options