Bump PyYAML to 5.4.1

Change-Id: I67bf0c527e31a256b236cd448a2330f59224df7a
Related-PROD: PRODX-12321
diff --git a/requirements.txt b/requirements.txt
index 4025580..7644c16 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -16,7 +16,7 @@
 prometheus-client==0.4.2
 pycparser==2.19
 pyOpenSSL==20.0.0
-PyYAML==5.3.1
+PyYAML==5.4.1
 requests==2.23.0
 simple-salesforce==0.74.2
 simple-settings==0.13.0