Bump bootstrap from 4.5.2 to 4.5.3

Bumps [bootstrap](https://github.com/twbs/bootstrap) from 4.5.2 to 4.5.3.
- [Release notes](https://github.com/twbs/bootstrap/releases)
- [Commits](twbs/bootstrap@v4.5.2...v4.5.3)

---
updated-dependencies:
- dependency-name: bootstrap
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

package-lock.json

@@ -44,13 +44,13 @@
     "autosize": "^4.0.4",
     "backbone": "^1.4.0",
     "blueimp-md5": "^2.18.0",
-    "bootstrap": "^4.5.2",
+    "bootstrap": "^4.5.3",
     "clipboard": "^2.0.8",
     "core-js": "^3.6.5",
     "css-vars-ponyfill": "^2.3.2",
     "davclient.js": "git+https://github.com/owncloud/davclient.js.git#0.2.1",
     "debounce": "^1.2.0",
-    "dompurify": "^2.2.8",
+    "dompurify": "^2.2.9",
     "escape-html": "^1.0.3",
     "handlebars": "^4.7.7",
     "jcrop": "git+https://github.com/ChristophWurst/Jcrop.git#v0.9.12-npm3",