Hardcoded secrets in YAML not detected

It seems like that hardcoded secrets like passwords in the following format are not being detected by SonarQube’s secret detection rules. Anyone knows the reason?

apiVersion: apps/v1
kind: Deployment
metadata:
name: app
spec:
replicas: 3
selector:
matchLabels:
test.kubernetes.io/name: app
template:
metadata:
labels:
test.kubernetes.io/name: app
spec:
containers:
- name: temporal-history
image: “test.sonarqube.io/app
imagePullPolicy: IfNotPresent
env:
- name: MYSQL_PASSWORD
value: sdtestfdfde123!@test

Thank you in advance.