Update dependency bootstrap to v5

| datasource | package   | from  | to    |
| ---------- | --------- | ----- | ----- |
| npm        | bootstrap | 4.6.2 | 5.3.8 |


Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

asset/package-lock.json

@@ -21,7 +21,7 @@
         "@babel/preset-env": "^7.16.4",
         "@docsearch/css": "alpha",
         "anchor-js": "^4.3.1",
-        "bootstrap": "^4.6.1",
+        "bootstrap": "^5.0.0",
         "choices.js": "^9.0.1",
         "gulp": "^4.0.2",
         "gulp-babel": "^8.0.0",