chore(deps): update helm release kube-prometheus-stack to v81.6.7

[renovate]

This PR contains the following updates:

Package	Update	Change
kube-prometheus-stack (source)	patch	81.6.6 → 81.6.7

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[github-actions]

Path: base/monitoring/kube-prometheus-stack/helmrelease.yaml
Version: 81.6.6 -> 81.6.7

@@ -104,7 +104,7 @@
 type: Opaque
 data:
 admin-user: "YWRtaW4="
- admin-password: "YndqMERvWWg2TFh4bGdlNTR3a29iTnpCTXRsdUJGcGYxaXlsajhyYw=="
+ admin-password: "YlA0VzZndFA4TjF4d0I2VkQ2NU5xWWdpaWlSNVJBRjBCQ2UxSVdwUg=="
 ldap-toml: ""
 ---
 # Source: kube-prometheus-stack/templates/alertmanager/secret.yaml
@@ -1513,7 +1513,7 @@
 annotations:
 checksum/config: bdda1c442c733d665e84ca8895df65730b6ef5a7fb9aedf8fad7485044f05462
 checksum/sc-dashboard-provider-config: e70bf6a851099d385178a76de9757bb0bef8299da6d8443602590e44f05fdf24
- checksum/secret: 5f7c0b90a0d3b6f604e9fa7bf3198dab079406c60b6ba2480b99968a570bed10
+ checksum/secret: 581ceb22070dd0f36b4510c283ec2c25a20c6350c825d4b16ba8b371112c8ec0
 kubectl.kubernetes.io/default-container: grafana
 spec:
 serviceAccountName: kube-prometheus-stack-grafana