Update version of PyYAML

Change-Id: I2a7ce64db75b6b0099990a9d935510fd986376fb
Signed-off-by: Mark Beierl <mark.beierl@canonical.com>
diff --git a/requirements.in b/requirements.in
index 0c2252a..ded4a40 100644
--- a/requirements.in
+++ b/requirements.in
@@ -33,4 +33,4 @@
 -r RO-VIM-vmware/requirements.in
 -r RO-VIM-gcp/requirements.in
 
-pyyaml<6
+pyyaml>6