Release v5.3.8 (#41669)

* Bump version

* Run dist

* Unrelated new docs error

dist/css/bootstrap.css

@@ -1,6 +1,6 @@
 @charset "UTF-8";
 /*!
- * Bootstrap  v5.3.7 (https://getbootstrap.com/)
+ * Bootstrap  v5.3.8 (https://getbootstrap.com/)
  * Copyright 2011-2025 The Bootstrap Authors
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
  */
@@ -547,6 +547,10 @@ legend + * {
   -webkit-appearance: textfield;
   outline-offset: -2px;
 }
+[type=search]::-webkit-search-cancel-button {
+  cursor: pointer;
+  filter: grayscale(1);
+}
 
 /* rtl:raw:
 [type="tel"],
@@ -6208,6 +6212,7 @@ textarea.form-control-lg {
 .spinner-grow,
 .spinner-border {
   display: inline-block;
+  flex-shrink: 0;
   width: var(--bs-spinner-width);
   height: var(--bs-spinner-height);
   vertical-align: var(--bs-spinner-vertical-align);