chore(knip): drop the stale pwsh ignoreBinaries entry

Every bare spawnSync('pwsh') became resolvePwshPath(), so knip's config
hint correctly flags the ignore as unused.

knip.json

@@ -5,7 +5,6 @@
   ],
   "ignoreBinaries": [
     "bwrap",
-    "pwsh",
     "python3",
     "sandbox-exec",
     "taskkill"