Bump mediaelement-plugins from 2.5.1 to 5.0.0

Bumps [mediaelement-plugins](https://github.com/mediaelement/mediaelement-plugins) from 2.5.1 to 5.0.0.
- [Release notes](https://github.com/mediaelement/mediaelement-plugins/releases)
- [Changelog](https://github.com/mediaelement/mediaelement-plugins/blob/master/changelog.md)
- [Commits](mediaelement/mediaelement-plugins@2.5.1...5.0.0)

---
updated-dependencies:
- dependency-name: mediaelement-plugins
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -109,7 +109,7 @@
     "less-plugin-clean-css": "^1.5.1",
     "manifesto.js": "^4.2.21",
     "mediaelement": "4.2.15",
-    "mediaelement-plugins": "2.5.1",
+    "mediaelement-plugins": "5.0.0",
     "openseadragon": "4.1.1",
     "pdfjs-dist": "3.11.174",
     "pdfobject": "2.3.0",