Bump terser from 4.3.4 to 4.8.1

Bumps [terser](https://github.com/terser/terser) from 4.3.4 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: direct:development
...

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

package-lock.json

@@ -3530,9 +3530,9 @@
       }
     },
     "node_modules/terser": {
-      "version": "4.3.4",
-      "resolved": "https://registry.npmjs.org/terser/-/terser-4.3.4.tgz",
-      "integrity": "sha512-Kcrn3RiW8NtHBP0ssOAzwa2MsIRQ8lJWiBG/K7JgqPlomA3mtb2DEmp4/hrUA+Jujx+WZ02zqd7GYD+QRBB/2Q==",
+      "version": "4.8.1",
+      "resolved": "https://registry.npmjs.org/terser/-/terser-4.8.1.tgz",
+      "integrity": "sha512-4GnLC0x667eJG0ewJTa6z/yXrbLGv80D9Ru6HIpCQmO+Q4PfEtBFi0ObSckqwL6VyQv/7ENJieXHo2ANmdQwgw==",
       "dev": true,
       "dependencies": {
         "commander": "^2.20.0",
@@ -6521,9 +6521,9 @@
       }
     },
     "terser": {
-      "version": "4.3.4",
-      "resolved": "https://registry.npmjs.org/terser/-/terser-4.3.4.tgz",
-      "integrity": "sha512-Kcrn3RiW8NtHBP0ssOAzwa2MsIRQ8lJWiBG/K7JgqPlomA3mtb2DEmp4/hrUA+Jujx+WZ02zqd7GYD+QRBB/2Q==",
+      "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",