Bump terser in /samples/react-custompropertypanecontrols

Bumps [terser](https://github.com/terser/terser) from 4.8.0 to 4.8.1.
- [Release notes](https://github.com/terser/terser/releases)
- [Changelog](https://github.com/terser/terser/blob/master/CHANGELOG.md)
- [Commits](https://github.com/terser/terser/commits)

---
updated-dependencies:
- dependency-name: terser
  dependency-type: indirect
...

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

samples/react-custompropertypanecontrols/package-lock.json

@@ -5014,8 +5014,8 @@
         },
         "terser": {
           "version": "5.10.0",
-          "resolved": "https://onedrive.pkgs.visualstudio.com/_packaging/odsp-npm/npm/registry/terser/-/terser-5.10.0.tgz",
-          "integrity": "sha1-uGOQgJwDiRBesKC2I5dWMJbdr8w=",
+          "resolved": "https://registry.npmjs.org/terser/-/terser-5.10.0.tgz",
+          "integrity": "sha512-AMmF99DMfEDiRJfxfY5jj5wNH/bYO09cniSqhfoyxc8sFoYIgkJy86G04UoZU5VjlpnplVu0K6Tx6E9b5+DlHA==",
           "dev": true,
           "requires": {
             "commander": "^2.20.0",
@@ -21305,9 +21305,9 @@
       }
     },
     "terser": {
-      "version": "4.8.0",
-      "resolved": "https://onedrive.pkgs.visualstudio.com/_packaging/odsp-npm/npm/registry/terser/-/terser-4.8.0.tgz",
-      "integrity": "sha1-YwVjQ9fHC7KfOvZlhlpG/gOg3xc=",
+      "version": "4.8.1",
+      "resolved": "https://registry.npmjs.org/terser/-/terser-4.8.1.tgz",
+      "integrity": "sha512-4GnLC0x667eJG0ewJTa6z/yXrbLGv80D9Ru6HIpCQmO+Q4PfEtBFi0ObSckqwL6VyQv/7ENJieXHo2ANmdQwgw==",
       "dev": true,
       "requires": {
         "commander": "^2.20.0",