chore: bump bootstrap to v5.3.0-alpha3

web/app/views/nav-right.php

@@ -2,7 +2,7 @@
 	<li class="nav-item dropdown">
 		<button class="btn btn-link nav-link py-2 px-0 px-lg-2 dropdown-toggle d-flex align-items-center" id="bd-theme" type="button" aria-expanded="false" data-bs-toggle="dropdown" data-bs-display="static">
 			<i class="bi bi-circle-half theme-icon-active" data-icon="bi-circle-half"></i>
-			<span class="d-lg-none">&nbsp;切换主题</span>
+			<span class="d-md-none">&nbsp;切换主题</span>
 		</button>
 		<ul class="dropdown-menu dropdown-menu-end" aria-labelledby="bd-theme" style="--bs-dropdown-min-width: 6rem;">
 			<li>

web/app/views/page-header.php

@@ -33,7 +33,7 @@ $new_msg_tot = $new_user_msg_num + $new_system_msg_num;
 	</script>
 
 	<!-- Bootstrap 5 (CSS) -->
-	<?= HTML::css_link('/css/bootstrap.min.css?v=5.3.0-alpha1') ?>
+	<?= HTML::css_link('/css/bootstrap.min.css?v=5.3.0-alpha3') ?>
 	<!-- Bootstrap Icons -->
 	<?= HTML::css_link('/css/bootstrap-icons.min.css?v=2022.9.23') ?>
 
@@ -55,7 +55,7 @@ $new_msg_tot = $new_user_msg_num + $new_system_msg_num;
 	<?= HTML::js_src('/js/jquery.cookie.min.js') ?>
 
 	<!-- Bootstrap 5: JavaScript -->
-	<?= HTML::js_src('/js/bootstrap.bundle.min.js?v=5.3.0-alpha1') ?>
+	<?= HTML::js_src('/js/bootstrap.bundle.min.js?v=5.3.0-alpha3') ?>
 
 	<!-- Color converter -->
 	<?= HTML::js_src('/js/color-converter.min.js') ?>