Bump rollup from 2.26.11 to 2.28.2 (#3056)

Bumps [rollup](https://github.com/rollup/rollup) from 2.26.11 to 2.28.2.
- [Release notes](https://github.com/rollup/rollup/releases)
- [Changelog](https://github.com/rollup/rollup/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rollup/rollup/compare/v2.26.11...v2.28.2)

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package-lock.json

@@ -9108,9 +9108,9 @@
       }
     },
     "rollup": {
-      "version": "2.26.11",
-      "resolved": "https://registry.npmjs.org/rollup/-/rollup-2.26.11.tgz",
-      "integrity": "sha512-xyfxxhsE6hW57xhfL1I+ixH8l2bdoIMaAecdQiWF3N7IgJEMu99JG+daBiSZQjnBpzFxa0/xZm+3pbCdAQehHw==",
+      "version": "2.28.2",
+      "resolved": "https://registry.npmjs.org/rollup/-/rollup-2.28.2.tgz",
+      "integrity": "sha512-8txbsFBFLmm9Xdt4ByTOGa9Muonmc8MfNjnGAR8U8scJlF1ZW7AgNZa7aqBXaKtlvnYP/ab++fQIq9dB9NWUbg==",
       "dev": true,
       "requires": {
         "fsevents": "~2.1.2"

package.json

@@ -144,7 +144,7 @@
     "nodemon": "^2.0.4",
     "npm-run-all": "^4.1.5",
     "postcss-cli": "^7.1.1",
-    "rollup": "^2.26.11",
+    "rollup": "^2.28.2",
     "stylelint": "^13.6.1",
     "stylelint-config-twbs-bootstrap": "^2.0.3",
     "terser": "^5.3.1",