PyYAML fix

Change-Id: Id015a12acbad821e0eb718e3784913fd9c72fed9
Signed-off-by: Mark Beierl <mark.beierl@canonical.com>

requirements-dev.txt

@@ -294,7 +294,7 @@ pytz==2023.3
     # via flask-babel
 pytzdata==2020.1
     # via pendulum
-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
     #   apispec

requirements.in

@@ -27,4 +27,4 @@ prometheus-client
 python-ceilometerclient
 python-keystoneclient
 python-novaclient
-pyyaml==5.3.1
+pyyaml>6

requirements.txt

@@ -235,7 +235,7 @@ pytz==2023.3
     #   oslo-serialization
     #   oslo-utils
     #   pandas
-pyyaml==5.3.1
+pyyaml==6.0.1
     # via
     #   -r requirements.in
     #   cliff