Update references to mbedtls_dev

Change these to point to the new mbedtls_framework module in the
framework submodule.

Signed-off-by: David Horstmann <david.horstmann@arm.com>
diff --git a/scripts/min_requirements.py b/scripts/min_requirements.py
index 9888abe..c588a01 100755
--- a/scripts/min_requirements.py
+++ b/scripts/min_requirements.py
@@ -14,7 +14,7 @@
 import typing
 
 from typing import List, Optional
-from mbedtls_dev import typing_util
+from mbedtls_framework import typing_util
 
 def pylint_doesn_t_notice_that_certain_types_are_used_in_annotations(
         _list: List[typing.Any],