build(deps): bump terser from 5.11.0 to 5.12.0 in /src

Bumps [terser](https://github.com/terser/terser) from 5.11.0 to 5.12.0.
- [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/v5.11.0...v5.12.0)

---
updated-dependencies:
- dependency-name: terser
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

src/package.json

@@ -64,7 +64,7 @@
     "semver": "^7.3.5",
     "socket.io": "^2.4.1",
     "superagent": "^7.1.1",
-    "terser": "^5.11.0",
+    "terser": "^5.12.0",
     "threads": "^1.7.0",
     "tinycon": "0.6.8",
     "ueberdb2": "^2.0.2",