Fix italic font styles

This was missed during the bootstrap 5 upgrade

app/views/browse/_common_details.html.erb

@@ -3,7 +3,7 @@
   #<%= common_details.version %>
 </h4>
 
-<p class="font-italic">
+<p class="fst-italic">
   <% if common_details.changeset.tags["comment"].present? %>
     <%= linkify(common_details.changeset.tags["comment"]) %>
   <% else %>

app/views/browse/changeset.html.erb

@@ -3,7 +3,7 @@
 <%= render "sidebar_header", :title => t(".title", :id => @changeset.id) %>
 
 <div class="browse-section">
-  <p class="font-italic">
+  <p class="fst-italic">
     <%= linkify(@changeset.tags["comment"].to_s.presence || t("browse.no_comment")) %>
   </p>
   <p class="details"><%= changeset_details(@changeset) %></p>

app/views/changesets/_changeset.html.erb

@@ -11,7 +11,7 @@
    end %>
 
 <%= tag.li :id => "changeset_#{changeset.id}", :data => { :changeset => changeset_data }, :class => "list-group-item" do %>
-  <p class="font-italic">
+  <p class="fst-italic">
     <a class="changeset_id text-dark" href="<%= changeset_path(changeset) %>">
       <%= changeset.tags["comment"].to_s.presence || t("browse.no_comment") %>
     </a>

app/views/traces/_trace.html.erb

@@ -38,7 +38,7 @@
         <%= safe_join(trace.tags.collect { |tag| link_to_tag tag.tag }, ", ") %>
       <% end %>
     </p>
-    <p class="font-italic mb-0">
+    <p class="fst-italic mb-0">
       <%= trace.description %>
     </p>
   </td>