feat(frontend): appease pagespeed insights

frontend/src/routes/@[username]/+page.svelte

@@ -111,7 +111,7 @@
         {#if data.display_name}
           <div>
             <h2>{data.display_name}</h2>
-            <h5 class="text-body-secondary">@{data.name}</h5>
+            <p class="fs-5 text-body-secondary">@{data.name}</p>
           </div>
         {:else}
           <h2>@{data.name}</h2>

frontend/src/routes/@[username]/ProfileLink.svelte

@@ -20,7 +20,7 @@
   };
 </script>
 
-<Icon name="globe" aria-label="Link" />
+<Icon name="globe" aria-hidden />
 {#if isLink}
   <a href={link} rel="me nofollow noreferrer" target="_blank">{displayLink}</a>
 {:else}

frontend/src/routes/@[username]/[memberName]/+page.svelte

@@ -49,7 +49,7 @@
       </div>
       <div class="col-md">
         <h2>{data.display_name ?? data.name}</h2>
-        <h5 class="text-body-secondary">{data.name} (@{data.user.name})</h5>
+        <p class="fs-5 text-body-secondary">{data.name} (@{data.user.name})</p>
         {#if profileEmpty && $userStore?.id === data.user.id}
           <hr />
           <p>