[BUGFIX] Use Bootstrap 5 input group markup (#526)

Author: hahnmg

templates/default/list.html.twig

@@ -12,9 +12,7 @@
             <div class="row">
                 <div class="col-sm-auto">
                     <div class="input-group">
-                        <div class="input-group-prepend">
-                            <span class="input-group-text" id="">{{ currentVersion.title }}</span>
-                        </div>
+                        <span class="input-group-text" id="">{{ currentVersion.title }}</span>
                         <select class="form-control form-select"
                             onchange="if (this.value) window.location.href= '{{ path('root') }}list/version/' + this.value;">
                             <option>Choose a different version</option>

templates/default/partials/release-notes/version-selector.html.twig

@@ -3,9 +3,7 @@
         <div class="row">
             <div class="col-sm-auto">
                 <div class="input-group">
-                    <div class="input-group-prepend">
-                        <span class="input-group-text" id="">Version {{ currentVersion.current.version }}{% if currentVersion.current.elts %} ELTS{% endif %}</span>
-                    </div>
+                    <span class="input-group-text" id="">Version {{ currentVersion.current.version }}{% if currentVersion.current.elts %} ELTS{% endif %}</span>
                     <select class="form-control b_form__select form-select" onchange="if (this.value) window.location.href= '{{ path('root') }}release-notes/' + this.value;">
                         <option value="">Go to another version</option>
                         {% for version,entry in groupedVersions %}

templates/default/version.html.twig

@@ -12,9 +12,7 @@
             <div class="row">
                 <div class="col-sm-auto">
                     <div class="input-group">
-                        <div class="input-group-prepend">
-                            <span class="input-group-text" id="">{{ currentVersion.title }}</span>
-                        </div>
+                        <span class="input-group-text" id="">{{ currentVersion.title }}</span>
                         <select class="form-control form-select"
                             onchange="if (this.value) window.location.href= '{{ path('root') }}version/' + this.value;">
                             <option>Choose a different version</option>