Update dependency bootstrap to v5.3.8

.changes/unreleased/Release-renovate-1791511369318.yaml

@@ -0,0 +1,7 @@
+kind: Release
+body: |
+  - bootstrap: 5.2.3 ->  5.3.8
+
+time: 2026-10-09T02:02:49+00:00
+custom:
+  Issue: ""

package.json

@@ -5,7 +5,7 @@
   "private": true,
   "devDependencies": {
     "@symfony/ux-translator": "file:vendor/symfony/ux-translator/assets",
-    "bootstrap": "5.2.3",
+    "bootstrap": "5.3.8",
     "intl-messageformat": "^10.5.11"
   },
   "scripts": {