fix: Add type: ignore for optional oci import to match AWS pattern

Mirrors the existing pattern in lazy_aws_deps.py where optional
dependencies use type: ignore since they aren't installed in CI.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: fern-support

src/cohere/manually_maintained/lazy_oci_deps.py

@@ -24,7 +24,7 @@ def lazy_oci() -> Any:
         ImportError: If the OCI SDK is not installed
     """
     try:
-        import oci
+        import oci  # type: ignore
         return oci
     except ImportError:
         raise ImportError(OCI_INSTALLATION_MESSAGE)