Bump rollup from 2.26.11 to 2.28.1 (#31725)

Bumps [rollup](https://github.com/rollup/rollup) from 2.26.11 to 2.28.1.
- [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...v2.28.1)

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

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

package-lock.json

@@ -9868,9 +9868,9 @@
       }
     },
     "rollup": {
-      "version": "2.26.11",
-      "resolved": "https://registry.npmjs.org/rollup/-/rollup-2.26.11.tgz",
-      "integrity": "sha512-xyfxxhsE6hW57xhfL1I+ixH8l2bdoIMaAecdQiWF3N7IgJEMu99JG+daBiSZQjnBpzFxa0/xZm+3pbCdAQehHw==",
+      "version": "2.28.1",
+      "resolved": "https://registry.npmjs.org/rollup/-/rollup-2.28.1.tgz",
+      "integrity": "sha512-DOtVoqOZt3+FjPJWLU8hDIvBjUylc9s6IZvy76XklxzcLvAQLtVAG/bbhsMhcWnYxC0TKKcf1QQ/tg29zeID0Q==",
       "dev": true,
       "requires": {
         "fsevents": "~2.1.2"

package.json

@@ -128,7 +128,7 @@
     "npm-run-all": "^4.1.5",
     "popper.js": "^1.16.1",
     "postcss-cli": "^7.1.2",
-    "rollup": "^2.26.11",
+    "rollup": "^2.28.1",
     "rollup-plugin-istanbul": "^2.0.1",
     "shelljs": "^0.8.4",
     "sirv-cli": "^1.0.6",