PyYAML fix

Change-Id: Icd71a982131353a03fa745ff7616ad657173e657
Signed-off-by: Mark Beierl <mark.beierl@canonical.com>
diff --git a/requirements-dev.txt b/requirements-dev.txt
index b758140..11a834c 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -44,5 +44,5 @@
     # via
     #   -r https://osm.etsi.org/gitweb/?p=osm/common.git;a=blob_plain;f=requirements.txt;hb=paas
     #   motor
-pyyaml==5.3.1
+pyyaml==6.0.1
     # via -r https://osm.etsi.org/gitweb/?p=osm/common.git;a=blob_plain;f=requirements.txt;hb=paas