chore(deps): update quay.io/cortexproject/cortex docker tag to v1.19.1

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

Chart.yaml

@@ -1,6 +1,6 @@
 apiVersion: v2
 version: 2.6.0
-appVersion: v1.19.0
+appVersion: v1.19.1
 description: 'Horizontally scalable, highly available, multi-tenant, long term Prometheus.'
 home: https://cortexmetrics.io/
 icon: https://avatars2.githubusercontent.com/u/43045022?s=200&v=4

README.md

@@ -2,7 +2,7 @@
 
 # cortex
 
-![Version: 2.6.0](https://img.shields.io/badge/Version-2.6.0-informational?style=flat-square) ![AppVersion: v1.19.0](https://img.shields.io/badge/AppVersion-v1.19.0-informational?style=flat-square)
+![Version: 2.6.0](https://img.shields.io/badge/Version-2.6.0-informational?style=flat-square) ![AppVersion: v1.19.1](https://img.shields.io/badge/AppVersion-v1.19.1-informational?style=flat-square)
 
 Horizontally scalable, highly available, multi-tenant, long term Prometheus.