chore(deps): bump datatables.net-buttons-bs4 from 2.1.1 to 2.2.1 (#4200)

Bumps [datatables.net-buttons-bs4](https://github.com/DataTables/Dist-DataTables-Buttons-Bootstrap4) from 2.1.1 to 2.2.1.
- [Release notes](https://github.com/DataTables/Dist-DataTables-Buttons-Bootstrap4/releases)
- [Commits](https://github.com/DataTables/Dist-DataTables-Buttons-Bootstrap4/compare/2.1.1...2.2.1)

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

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package.json

@@ -80,7 +80,7 @@
     "datatables.net": "^1.11.3",
     "datatables.net-autofill-bs4": "^2.3.9",
     "datatables.net-bs4": "^1.11.3",
-    "datatables.net-buttons-bs4": "^2.1.1",
+    "datatables.net-buttons-bs4": "^2.2.1",
     "datatables.net-colreorder-bs4": "^1.5.5",
     "datatables.net-fixedcolumns-bs4": "^4.0.1",
     "datatables.net-fixedheader-bs4": "^3.2.0",