build(deps): bump terser from 5.20.0 to 5.21.0 in /src (#5961)

Bumps [terser](https://github.com/terser/terser) from 5.20.0 to 5.21.0.
- [Changelog](https://github.com/terser/terser/blob/master/CHANGELOG.md)
- [Commits](https://github.com/terser/terser/compare/v5.20.0...v5.21.0)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

src/package-lock.json

@@ -7737,9 +7737,9 @@
       "dev": true
     },
     "terser": {
-      "version": "5.20.0",
-      "resolved": "https://registry.npmjs.org/terser/-/terser-5.20.0.tgz",
-      "integrity": "sha512-e56ETryaQDyebBwJIWYB2TT6f2EZ0fL0sW/JRXNMN26zZdKi2u/E/5my5lG6jNxym6qsrVXfFRmOdV42zlAgLQ==",
+      "version": "5.21.0",
+      "resolved": "https://registry.npmjs.org/terser/-/terser-5.21.0.tgz",
+      "integrity": "sha512-WtnFKrxu9kaoXuiZFSGrcAvvBqAdmKx0SFNmVNYdJamMu9yyN3I/QF0FbH4QcqJQ+y1CJnzxGIKH0cSj+FGYRw==",
       "requires": {
         "@jridgewell/source-map": "^0.3.3",
         "acorn": "^8.8.2",

src/package.json

@@ -64,7 +64,7 @@
     "semver": "^7.5.4",
     "socket.io": "^2.5.0",
     "superagent": "^8.1.2",
-    "terser": "^5.20.0",
+    "terser": "^5.21.0",
     "threads": "^1.7.0",
     "tinycon": "0.6.8",
     "ueberdb2": "^4.2.17",