chore(nix): Update package to v0.106.2 (#477)

## Automated Nix Package Update

This PR updates the Nix package expression to version **0.106.2**.

### Changes
- ✅ Updated `version` to `0.106.2`
- ✅ Updated source `hash` to
`sha256-2Mt5e4m9i53cbKOnarZWsabFvZLre+BBKwWSCKKsTcg=`
- ✅ Updated `vendorHash` to
`sha256-aNk/WbOBulWj3Nc2Zl15G3Ett8MfEYp7cCd+dXlv2uc=`
- ✅ Formatted with nixfmt-rfc-style

The `Nix Build Verification` workflow runs on this PR and is the
authoritative gate for verifying the updated hashes build cleanly.

### Verification
```bash
nix-build nix/default.nix
result/bin/infer version
```

### Related
- Release:
https://github.com/inference-gateway/cli/releases/tag/v0.106.2

---
🤖 Auto-generated by `.github/workflows/nix-version-sync.yml`

Co-authored-by: ig-semantic-release-bot[bot] <207089317+ig-semantic-release-bot[bot]@users.noreply.github.com>

Author: github-actions[bot]

nix/package.nix

@@ -12,13 +12,13 @@ buildGoModule (finalAttrs: {
   __structuredAttrs = true;
 
   pname = "infer";
-  version = "0.106.1";
+  version = "0.106.2";
 
   src = fetchFromGitHub {
     owner = "inference-gateway";
     repo = "cli";
     tag = "v${finalAttrs.version}";
-    hash = "sha256-3zua0l7t2tcV24OyskULI9cOPB0hQmhYt/jyM/m3BgM=";
+    hash = "sha256-2Mt5e4m9i53cbKOnarZWsabFvZLre+BBKwWSCKKsTcg=";
   };
 
   vendorHash = "sha256-aNk/WbOBulWj3Nc2Zl15G3Ett8MfEYp7cCd+dXlv2uc=";