Bump datatables.net-buttons from 2.4.2 to 3.0.0 in /tcms

Bumps [datatables.net-buttons](https://github.com/DataTables/Dist-DataTables-Buttons) from 2.4.2 to 3.0.0.
- [Release notes](https://github.com/DataTables/Dist-DataTables-Buttons/releases)
- [Commits](DataTables/Dist-DataTables-Buttons@2.4.2...3.0.0)

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

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

tcms/package.json

@@ -2,7 +2,7 @@
   "dependencies": {
     "bootstrap-duration-picker": "2.1.3",
     "bootstrap-switch": "3.3.4",
-    "datatables.net-buttons": "2.4.3",
+    "datatables.net-buttons": "3.0.0",
     "html5sortable": "0.13.3",
     "jszip": "3.10.1",
     "patternfly": "3.59.5",