Bump 404 docker image version to 0.4.91 (#6661)

<Actions>
<action
id="1cd84b1e383375b9af2a99aa7e0e4e6e36282b934220161d148fa3b45e8a910f">
        <h3>Bump `404` docker image version</h3>
<details
id="8f81a9b05a6ef17b9187b8ad034bfdf7607dfa15a3cd9a4d6fd6edab563ffefa">
            <summary>Update 404 docker image tag</summary>
<p>change detected:&#xA;&#x9;* key &#34;$.defaultBackend.image.tag&#34;
updated from &#34;0.4.90&#34; to &#34;0.4.91&#34;, in file
&#34;config/public-nginx-ingress__common.yaml&#34;</p>
            <details>
                <summary>0.4.89</summary>
<pre>&lt;!-- Optional: add a release summary here --&gt;&#xA;* No
changes&#xA;</pre>
            </details>
            <details>
                <summary>0.4.90</summary>
<pre>&lt;!-- Optional: add a release summary here --&gt;&#xA;* No
changes&#xA;</pre>
            </details>
            <details>
                <summary>0.4.91</summary>
<pre>&lt;!-- Optional: add a release summary here --&gt;&#xA;## ✍ Other
changes&#xA;&#xA;* cleanup(Jenkinsfile_k8s) remove the `cache-to` option
(#50) @dduportal&#xA;</pre>
            </details>
        </details>
<details
id="fee3ba393efb2201d1f0beb310cb6192212e54387842c15f0e2e22a19a69111a">
            <summary>Update 404 docker image tag</summary>
<p>change detected:&#xA;&#x9;* key &#34;$.defaultBackend.image.tag&#34;
updated from &#34;0.4.90&#34; to &#34;0.4.91&#34;, in file
&#34;config/private-nginx-ingress__common.yaml&#34;</p>
            <details>
                <summary>0.4.89</summary>
<pre>&lt;!-- Optional: add a release summary here --&gt;&#xA;* No
changes&#xA;</pre>
            </details>
            <details>
                <summary>0.4.90</summary>
<pre>&lt;!-- Optional: add a release summary here --&gt;&#xA;* No
changes&#xA;</pre>
            </details>
            <details>
                <summary>0.4.91</summary>
<pre>&lt;!-- Optional: add a release summary here --&gt;&#xA;## ✍ Other
changes&#xA;&#xA;* cleanup(Jenkinsfile_k8s) remove the `cache-to` option
(#50) @dduportal&#xA;</pre>
            </details>
        </details>
<a
href="https://infra.ci.jenkins.io/job/updatecli/job/kubernetes-management/job/main/50653/">Jenkins
pipeline link</a>
    </action>
</Actions>

---

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Author: dduportal

config/private-nginx-ingress__common.yaml

@@ -2,7 +2,7 @@ defaultBackend:
   enabled: true
   image:
     repository: jenkinsciinfra/404
-    tag: 0.4.89
+    tag: 0.4.91
     pullPolicy: IfNotPresent
   ## Unprivileged port as non root user and no escalation allowed
   port: 8080

config/public-nginx-ingress__common.yaml

@@ -2,7 +2,7 @@ defaultBackend:
   enabled: true
   image:
     repository: jenkinsciinfra/404
-    tag: 0.4.89
+    tag: 0.4.91
     pullPolicy: IfNotPresent
   ## Unprivileged port as non root user and no escalation allowed
   port: 8080