Fix image build

- fix: upgrade PyYAML to 6.0.1
- set baseimage to generic 3-alpine

Change-Id: I78fb4fda2cd13548df7b879aa615ce9e0920312d
Related-PROD: PRODX-34499
diff --git a/requirements.txt b/requirements.txt
index c6c2418..b20ad6e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -16,7 +16,7 @@
 prometheus-client==0.11.0
 pycparser==2.20
 pyOpenSSL==20.0.1
-PyYAML==6.0
+PyYAML==6.0.1
 requests==2.25.1
 simple-salesforce==1.11.2
 simple-settings==1.0.0