bump cryptography in /tools/visualize-pdr

Bumps cryptography dependency to latest.

Look Changelog[1] and commits list[2] for more information.

[1]: https://github.com/pyca/cryptography/blob/main/CHANGELOG.rst
[2]: https://github.com/pyca/cryptography/compare/39.0.1...43.0.1

Change-Id: I141cbffd61f3edd1114c2b61549a4adee3c588c5
Signed-off-by: Manojkiran Eda <manojkiran.eda@gmail.com>
diff --git a/tools/visualize-pdr/requirements.txt b/tools/visualize-pdr/requirements.txt
index 3d308f6..15323db 100644
--- a/tools/visualize-pdr/requirements.txt
+++ b/tools/visualize-pdr/requirements.txt
@@ -2,7 +2,7 @@
 tabulate==0.8.9
 bcrypt==3.2.0
 cffi==1.14.5
-cryptography==39.0.1
+cryptography==43.0.1
 paramiko==2.10.1
 pycparser==2.20
 pynacl==1.4.0