Update dependency terser to v5

Author: renovate-bot

package.json

@@ -143,7 +143,7 @@
     "sinon": "9.0.3",
     "sinon-chai": "3.5.0",
     "source-map-loader": "1.0.2",
-    "terser": "4.8.0",
+    "terser": "5.2.1",
     "ts-loader": "8.0.3",
     "ts-node": "8.10.2",
     "tslint": "6.1.3",

repo-scripts/size-analysis/package.json

@@ -26,7 +26,7 @@
     "rollup-plugin-typescript2": "0.27.2",
     "tmp": "0.2.1",
     "typescript": "4.0.2",
-    "terser": "4.8.0",
+    "terser": "5.2.1",
     "yargs": "15.4.1",
     "@firebase/util": "0.3.1"
   },

yarn.lock

@@ -14637,7 +14637,16 @@ terser-webpack-plugin@^1.4.3:
     webpack-sources "^1.4.0"
     worker-farm "^1.7.0"
 
-[email protected], terser@^4.1.2, terser@^4.7.0:
+[email protected]:
+  version "5.2.1"
+  resolved "https://registry.npmjs.org/terser/-/terser-5.2.1.tgz#40b971b8d28b4fe98c9e8c0d073ab48e7bb96cd8"
+  integrity sha512-/AOtjRtAMNGO0fIF6m8HfcvXTw/2AKpsOzDn36tA5RfhRdeXyb4RvHxJ5Pah7iL6dFkLk+gOnCaNHGwJPl6TrQ==
+  dependencies:
+    commander "^2.20.0"
+    source-map "~0.6.1"
+    source-map-support "~0.5.12"
+
+terser@^4.1.2, terser@^4.7.0:
   version "4.8.0"
   resolved "https://registry.npmjs.org/terser/-/terser-4.8.0.tgz#63056343d7c70bb29f3af665865a46fe03a0df17"
   integrity sha512-EAPipTNeWsb/3wLPeup1tVPaXfIaU68xMnVdPafIL1TV05OhASArYyIfFvnvJCNrR2NIOvDVNNTFRa+Re2MWyw==