[LIVY-1088] Update of frontend libs to resolve unnecessary CVE scanner warnings

.rat-excludes

@@ -11,11 +11,11 @@ logs/*
 **/dependency-reduced-pom.xml
 **/target/**
 **/bootstrap.min.css
-**/bootstrap.min.js
-**/dataTables.bootstrap.min.css
-**/dataTables.bootstrap.min.js
+**/bootstrap.bundle.min.js
+**/dataTables.bootstrap4.min.css
+**/dataTables.bootstrap4.min.js
 **/jquery.dataTables.min.js
-**/jquery-3.4.1.min.js
+**/jquery-3.7.1.min.js
 **/fonts/**
 **/livy_python_api.egg-info/*
 **/*.txt

server/src/main/resources/org/apache/livy/server/ui/static/css/livy-ui.css

@@ -49,4 +49,17 @@ td .progress {
 
 #session-summary {
   margin: 20px 0;
-}
+}
+
+/*
+ * Bootstrap styles select.custom-select elements with an inline SVG arrow
+ * loaded from a data: URI background image, which the default
+ * Content-Security-Policy (img-src 'self') blocks:
+ * https://getbootstrap.com/docs/4.6/components/input-group/#custom-select
+ * Fall back to the browser's native <select> appearance instead.
+ */
+.custom-select {
+  appearance: auto;
+  background: #fff;
+  padding-right: .75rem;
+}