Pin PyYAML to 6.0.1

BUG: 325300016
Change-Id: I2d74b8cb6278281f63470f30305b5482d5f4d44d

python-requirements.txt

diff --git a/python-requirements.txt b/python-requirements.txt
index 88e4ca1..f6d2e5f 100644
--- a/python-requirements.txt
+++ b/python-requirements.txt
@@ -36,7 +36,7 @@
 psutil
 pyfzf
 pyserial
-pyyaml
+pyyaml==6.0.1
 requests
 robotframework==6.0.2
 scipy