Bump baseimage and PyYAML to fix CVEs

Change-Id: I6584860f11330bcba55be50251df83bcfe05d58a
Related-PROD: PRODX-23021
diff --git a/requirements.txt b/requirements.txt
index 91c004f..c810486 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -16,7 +16,7 @@
 prometheus-client==0.11.0
 pycparser==2.20
 pyOpenSSL==20.0.1
-PyYAML==5.4.1
+PyYAML==6.0
 requests==2.25.1
 simple-salesforce==1.11.2
 simple-settings==1.0.0