Bump terser from 4.6.7 to 4.6.10

Bumps [terser](https://github.com/terser/terser) from 4.6.7 to 4.6.10.
- [Release notes](https://github.com/terser/terser/releases)
- [Changelog](https://github.com/terser/terser/blob/master/CHANGELOG.md)
- [Commits](https://github.com/terser/terser/compare/v4.6.7...v4.6.10)

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

package.json

@@ -119,7 +119,7 @@
     "resize-observer-polyfill": "1.5.1",
     "spectron": "10.0.1",
     "style-loader": "1.1.3",
-    "terser": "4.6.7",
+    "terser": "4.6.10",
     "terser-webpack-plugin": "2.3.5",
     "ts-node": "8.8.1",
     "typescript": "3.8.3",