Update dependency rollup-plugin-dts to v6

Author: renovate[bot]

package.json

@@ -49,7 +49,7 @@
     "rimraf": "^3.0.2",
     "rollup": "2.79.1",
     "rollup-plugin-cleanup": "^3.2.1",
-    "rollup-plugin-dts": "4.2.3",
+    "rollup-plugin-dts": "6.1.0",
     "rollup-plugin-terser": "^7.0.2",
     "ts-jest": "27.1.5",
     "tslib": "2.6.2",