Bump datatables.net-responsive-bs4 from 2.2.8 to 2.2.9 (#3779)

Bumps [datatables.net-responsive-bs4](https://github.com/DataTables/Dist-DataTables-Responsive-Bootstrap4) from 2.2.8 to 2.2.9.
- [Release notes](https://github.com/DataTables/Dist-DataTables-Responsive-Bootstrap4/releases)
- [Commits](https://github.com/DataTables/Dist-DataTables-Responsive-Bootstrap4/compare/2.2.8...2.2.9)

---
updated-dependencies:
- dependency-name: datatables.net-responsive-bs4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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package.json

@@ -85,7 +85,7 @@
     "datatables.net-fixedcolumns-bs4": "^3.3.3",
     "datatables.net-fixedheader-bs4": "^3.1.9",
     "datatables.net-keytable-bs4": "^2.6.2",
-    "datatables.net-responsive-bs4": "^2.2.8",
+    "datatables.net-responsive-bs4": "^2.2.9",
     "datatables.net-rowgroup-bs4": "^1.1.3",
     "datatables.net-rowreorder-bs4": "^1.2.8",
     "datatables.net-scroller-bs4": "^2.0.4",