Bump rollup from 3.21.0 to 3.21.2 in /js (#20057)

Bumps [rollup](https://github.com/rollup/rollup) from 3.21.0 to 3.21.2.
- [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/v3.21.0...v3.21.2)

---
updated-dependencies:
- dependency-name: rollup
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

js/libs/keycloak-js/package.json

@@ -48,7 +48,7 @@
     "@rollup/plugin-terser": "^0.4.1",
     "@rollup/plugin-typescript": "^11.1.0",
     "es6-promise": "^4.2.8",
-    "rollup": "^3.21.0"
+    "rollup": "^3.21.2"
   },
   "dependencies": {
     "base64-js": "^1.5.1",

js/package-lock.json

@@ -156,7 +156,7 @@
         "@rollup/plugin-terser": "^0.4.1",
         "@rollup/plugin-typescript": "^11.1.0",
         "es6-promise": "^4.2.8",
-        "rollup": "^3.21.0"
+        "rollup": "^3.21.2"
       }
     },
     "libs/keycloak-masthead": {
@@ -9419,9 +9419,9 @@
       }
     },
     "node_modules/rollup": {
-      "version": "3.21.0",
-      "resolved": "https://registry.npmjs.org/rollup/-/rollup-3.21.0.tgz",
-      "integrity": "sha512-ANPhVcyeHvYdQMUyCbczy33nbLzI7RzrBje4uvNiTDJGIMtlKoOStmympwr9OtS1LZxiDmE2wvxHyVhoLtf1KQ==",
+      "version": "3.21.2",
+      "resolved": "https://registry.npmjs.org/rollup/-/rollup-3.21.2.tgz",
+      "integrity": "sha512-c4vC+JZ3bbF4Kqq2TtM7zSKtSyMybFOjqmomFax3xpfYaPZDZ4iz8NMIuBRMjnXOcKYozw7bC6vhJjiWD6JpzQ==",
       "dev": true,
       "bin": {
         "rollup": "dist/bin/rollup"