test.py: Update pycryptodomex to address CVE-2023-52323

The version of pycryptodomex that we use is vulnerable to this CVE.
While not likely an issue for us, let us upgrade to be on the safe side.

Reported-by: GitHub dependabot
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/test/py/requirements.txt b/test/py/requirements.txt
index f7e76bd..07348b6 100644
--- a/test/py/requirements.txt
+++ b/test/py/requirements.txt
@@ -12,7 +12,7 @@
 pbr==5.4.3
 pluggy==0.13.0
 py==1.10.0
-pycryptodomex==3.9.8
+pycryptodomex==3.19.1
 pyelftools==0.27
 pygit2==1.9.2
 pyparsing==3.0.7