Add icons to v2 catalog headers

Add visual icons to Version, ProcessVersion, Issues, PRs, and Stars column headers in the v2 module catalog template.

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

Author: MariusStorhaug

.github/actions/update-index/templates/module-catalog/v2-table.html

@@ -2,11 +2,10 @@
 <table>
     <tr>
         <th width="24%">Name</th>
-        <th width="12%">Version</th>
-        <th width="24%">ProcessVersion</th>
-        <th width="10%">Issues</th>
-        <th width="10%">PRs</th>
-        <th width="10%">Stars</th>
+        <th width="12%">🏷️ Version</th>
+        <th width="24%">⚙️ ProcessVersion</th>
+        <th width="10%">❗ Issues</th>
+        <th width="10%">🔀 PRs</th>
+        <th width="10%">⭐ Stars</th>
     </tr>
 {{ ROWS }}</table>
-