Revert "chore: automate Nix hash update when lock file changes"

This reverts commit 73fd886.

- Revert Nix packaging changes that caused reproducibility issues over time
- Deno's lock file mechanism proved insufficient for long-term dependency pinning in Nix builds
- Restore original wrapper script approach until a robust solution is found

The deterministic dependency vendoring approach introduced in the previous refactor relied on Deno's lock file for reproducibility. However, Deno's ecosystem does not guarantee that dependencies remain fetchable indefinitely, causing Nix builds to fail when upstream packages become unavailable or change.

Author: natsukium

.github/workflows/test.yml

@@ -18,7 +18,6 @@ jobs:
       - uses: denoland/setup-deno@v2
         with:
           deno-version: ${{ env.DENO_VERSION }}
-      - uses: nixbuild/nix-quick-install-action@v34
       - run: deno fmt --check
       - run: deno lint
       - run: deno task check

deno.json

@@ -27,8 +27,7 @@
     "coverage": "deno coverage .coverage --include='src/'",
     "verify": "deno fmt && deno lint && deno task check && deno task test",
     "probitas": "deno run -A --unstable-kv --lock ./deno.lock ./mod.ts",
-    "update-nix-hash": "nix run .#probitas.updateDepsHash",
-    "update-lock": "rm deno.lock && deno cache -r mod.ts jsr:@probitas/probitas jsr:@probitas/probitas@^0 && deno install && deno task update-nix-hash",
+    "update-lock": "rm deno.lock && deno cache -r mod.ts jsr:@probitas/probitas jsr:@probitas/probitas@^0",
     "update-version": "deno run -A .scripts/update_version.ts"
   },
   "imports": {