ci: Try the SDK spec workflow from the Depot copy (temporary)

Author: khvn26

.depot/workflows/sdk-spec.yml

@@ -11,7 +11,7 @@ permissions:
 jobs:
   sdk-spec:
     # Keep the ref in `uses:` and `spec-ref` in sync.
-    uses: Flagsmith/sdk-spec/.github/workflows/run-spec.yml@v0.6.0
+    uses: Flagsmith/sdk-spec/.github/workflows/run-spec.yml@f04ddead8362b4ae2fa3d0ee8dd205c885f6a6af
     with:
       spec-ref: v0.6.0
       language: python