fix(koolbox): Switch from docker library images to upstream fedora

cli/Dockerfile

 # kubectl CLI cache
-FROM docker.io/library/fedora:35 as kubectl
+FROM registry.fedoraproject.org/fedora:35 as kubectl
 
 # renovate: datasource=github-releases depName=kubernetes/kubernetes
 ARG KUBECTL_VERSION=v1.22.0
@@ -15,7 +15,7 @@ RUN curl -LO "https://dl.k8s.io/release/${KUBECTL_VERSION}/bin/linux/amd64/kubec
     && install -o root -g root -m 0755 kubectl-convert /usr/local/bin/kubectl-convert
 
 # Helm CLI cache
-FROM docker.io/library/fedora:35 as helm
+FROM registry.fedoraproject.org/fedora:35 as helm
 
 # renovate: datasource=github-releases depName=helm/helm
 ARG HELM_VERSION=v3.6.3
@@ -25,7 +25,7 @@ RUN curl -L "https://get.helm.sh/helm-${HELM_VERSION}-linux-amd64.tar.gz" | tar
     && install -o root -g root -m 0755 helm /usr/local/bin/helm
 
 # Flux CLI cache
-FROM docker.io/library/fedora:35 as flux
+FROM registry.fedoraproject.org/fedora:35 as flux
 
 # renovate: datasource=github-releases depName=fluxcd/flux2
 ARG FLUX_VERSION=0.26.0
@@ -35,7 +35,7 @@ RUN curl -L https://github.com/fluxcd/flux2/releases/download/v${FLUX_VERSION}/f
     && install -o root -g root -m 0755 flux /usr/local/bin/flux
 
 # kustomize CLI cache
-FROM docker.io/library/fedora:35 as kustomize
+FROM registry.fedoraproject.org/fedora:35 as kustomize
 
 # renovate: datasource=github-releases depName=kubernetes-sigs/kustomize
 ARG KUSTOMIZE_VERSION=4.1.3
@@ -45,7 +45,7 @@ RUN curl -L https://github.com/kubernetes-sigs/kustomize/releases/download/kusto
     && install -o root -g root -m 0755 kustomize /usr/local/bin/kustomize
 
 # kubeval CLI cache
-FROM docker.io/library/fedora:35 as kubeval
+FROM registry.fedoraproject.org/fedora:35 as kubeval
 
 # renovate: datasource=github-releases depName=instrumenta/kubeval
 ARG KUBEVAL_VERSION=v0.16.1
@@ -55,7 +55,7 @@ RUN curl -L https://github.com/instrumenta/kubeval/releases/download/${KUBEVAL_V
     && install -o root -g root -m 0755 kubeval /usr/local/bin/kubeval
 
 # SOPS CLI cache
-FROM docker.io/library/fedora:35 as sops
+FROM registry.fedoraproject.org/fedora:35 as sops
 
 # renovate: datasource=github-releases depName=mozilla/sops
 ARG SOPS_VERSION=v3.7.1
@@ -65,7 +65,7 @@ RUN curl -L https://github.com/mozilla/sops/releases/download/${SOPS_VERSION}/so
     && install -o root -g root -m 0755 sops /usr/local/bin/sops
 
 # yq CLI cache
-FROM docker.io/library/fedora:35 as yq
+FROM registry.fedoraproject.org/fedora:35 as yq
 
 # renovate: datasource=github-releases depName=mikefarah/yq
 ARG YQ_VERSION=v4.6.1
@@ -76,7 +76,7 @@ RUN curl -L https://github.com/mikefarah/yq/releases/download/${YQ_VERSION}/yq_l
 
 
 # Actual start of container build
-FROM docker.io/library/fedora:35
+FROM registry.fedoraproject.org/fedora:35
 
 ARG MAINTAINER="unmaintained"
 LABEL maintainer=$MAINTAINER