Bump nginx docker image version to 1.28.2-alpine

[jenkins-infra-updatecli]

Bump nginx:stable docker image version

Update nginx stable docker image version for artifact-caching-proxy chart

change detected: * key "$.image.tag" updated from "1.28.1-alpine" to "1.28.2-alpine", in file "charts/artifact-caching-proxy/values.yaml" change detected: * key "$.version" updated from "1.6.10" to "1.6.11", in file "charts/artifact-caching-proxy/Chart.yaml"

Update nginx stable docker image version for plugin-site chart

change detected: * key "$.frontend.image.tag" updated from "1.28.1-alpine" to "1.28.2-alpine", in file "charts/plugin-site/values.yaml" change detected: * key "$.version" updated from "0.6.0" to "0.6.1", in file "charts/plugin-site/Chart.yaml"

Update nginx stable docker image version for nginx-website chart

change detected: * key "$.image.tag" updated from "1.28.1-alpine" to "1.28.2-alpine", in file "charts/nginx-website/values.yaml" change detected: * key "$.version" updated from "0.7.0" to "0.7.1", in file "charts/nginx-website/Chart.yaml"

Jenkins pipeline link

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