QVAC-22367 chore[transcription-parakeet]: resolve parakeet-cpp from our fork registry (CI)

Point the addon's default-registry at the Zbig9000 fork of qvac-registry-vcpkg
(branch QVAC-22367-bump-parakeet-cpp @ 9838379), whose parakeet-cpp port pins
our qvac-ext-lib-whisper.cpp fork branch (engines/parakeet @ e58ff4b0). This is
what makes the addon CI actually build and test our long-audio lib changes --
the default tetherto registry (and a local overlay) resolves the unmodified
upstream lib, so CI wouldn't exercise our fix.

Drops the WIP vcpkg-overlays/parakeet-cpp (the fork registry now provides the
port). WIP wiring: on upstream merge of the source + registry PRs, revert
default-registry to tetherto and keep the version>= / overrides pin.

Author: Zbig9000

packages/transcription-parakeet/vcpkg-configuration.json

@@ -1,8 +1,8 @@
 {
   "default-registry": {
     "kind": "git",
-    "baseline": "74d2dfd03d1c2c0767bac6d892ec43a2a0e29c10",
-    "repository": "https://github.com/tetherto/qvac-registry-vcpkg.git"
+    "baseline": "96f3c44d4b4ad68395f09103b2a91013baf36ef0",
+    "repository": "https://github.com/Zbig9000/qvac-registry-vcpkg.git"
   },
   "registries": [
     {
@@ -15,8 +15,5 @@
         "spirv-headers"
       ]
     }
-  ],
-  "overlay-ports": [
-    "vcpkg-overlays/parakeet-cpp"
   ]
 }