Add Hetzner to "used by" homepage section (#435)

Image was provided by Hetzner Online marketing team

Signed-off-by: Sebastian Gaiser <sebastian.gaiser@hetzner-cloud.de>
Co-authored-by: Sebastian Gaiser <sebastian.gaiser@hetzner-cloud.de>

_includes/homepage/homepage-usedby-band.html

@@ -24,9 +24,7 @@ <h2 class="text-centered blue">Strimzi is used by</h2>
       </div>
 
       <div class="item__usedby">
-        <img
-          src="{{site.baseurl}}/assets/images/smart-ix-logo-colored-transparent.png"
-        />
+        <img src="{{site.baseurl}}/assets/images/smart-ix-logo-colored-transparent.png" />
       </div>
       <div class="item__usedby">
         <img src="{{site.baseurl}}/assets/images/axual_logo.png" />
@@ -51,10 +49,13 @@ <h2 class="text-centered blue">Strimzi is used by</h2>
       <div class="item__usedby">
         <img src="{{site.baseurl}}/assets/images/decathlon_digital_logo.svg" />
       </div>
-
       <div class="item__usedby">
         <img src="{{site.baseurl}}/assets/images/skillsoft_logo.png" />
       </div>
+
+      <div class="item__usedby">
+        <img src="{{site.baseurl}}/assets/images/hetzner-logo-slogan_white_space-red.svg" />
+      </div>
     </div>
 
   <div class="margin-tb-xl container__cnative">