fix(deps): update dependency rollup-plugin-terser to v6.1.0 (#285)

Co-authored-by: Renovate Bot <bot@renovateapp.com>

Author: renovate[bot]

package-lock.json

@@ -89,7 +89,7 @@
     "rollup-plugin-babel": "4.4.0",
     "rollup-plugin-copy": "3.3.0",
     "rollup-plugin-postcss": "3.1.5",
-    "rollup-plugin-terser": "6.0.0",
+    "rollup-plugin-terser": "6.1.0",
     "rollup-plugin-typescript2": "0.27.2",
     "yargs": "15.4.1"
   },