Update devDeps.

Author: brettz9

package.json

@@ -33,15 +33,15 @@
     "@babel/core": "^7.14.0",
     "@babel/preset-env": "^7.14.0",
     "@babel/register": "^7.13.16",
-    "@rollup/plugin-babel": "^5.0.0",
+    "@rollup/plugin-babel": "^5.3.0",
     "chai": "^4.3.4",
-    "eslint": "^6.8.0",
+    "eslint": "^7.25.0",
     "espree": "^7.3.1",
     "esprima": "^4.0.1",
     "mocha": "^8.3.2",
     "nyc": "^15.1.0",
-    "rollup": "^2.7.3",
-    "rollup-plugin-terser": "^5.3.0"
+    "rollup": "^2.46.0",
+    "rollup-plugin-terser": "^7.0.2"
   },
   "license": "BSD-2-Clause",
   "nyc": {