build: update terser version in lockfile

See angular/angular-cli#13582 (comment).

aio/yarn.lock

@@ -9205,7 +9205,7 @@ source-map-resolve@^0.5.0:
     source-map-url "^0.4.0"
     urix "^0.1.0"
 
-source-map-support@0.5.9, source-map-support@^0.5.5, source-map-support@~0.5.6:
+source-map-support@0.5.9, source-map-support@^0.5.5:
   version "0.5.9"
   resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.5.9.tgz#41bc953b2534267ea2d605bccfa7bfa3111ced5f"
   dependencies:
@@ -9218,6 +9218,14 @@ source-map-support@^0.4.0, source-map-support@^0.4.15, source-map-support@~0.4.0
   dependencies:
     source-map "^0.5.6"
 
+source-map-support@~0.5.9:
+  version "0.5.10"
+  resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.5.10.tgz#2214080bc9d51832511ee2bab96e3c2f9353120c"
+  integrity sha512-YfQ3tQFTK/yzlGJuX8pTwa4tifQj4QS2Mj7UegOu8jAz59MqIiMGPXxQhVQiIMNzayuUSF/jEuVnfFF5JqybmQ==
+  dependencies:
+    buffer-from "^1.0.0"
+    source-map "^0.6.0"
+
 source-map-url@^0.4.0:
   version "0.4.0"
   resolved "https://registry.yarnpkg.com/source-map-url/-/source-map-url-0.4.0.tgz#3e935d7ddd73631b97659956d55128e87b5084a3"
@@ -9803,13 +9811,14 @@ terser-webpack-plugin@1.1.0:
     webpack-sources "^1.1.0"
     worker-farm "^1.5.2"
 
-terser@^3.8.1:
-  version "3.10.0"
-  resolved "https://registry.yarnpkg.com/terser/-/terser-3.10.0.tgz#6ae15dafecbd02c9788d5f36d27fca32196b533a"
+terser@3.16.1, terser@^3.8.1:
+  version "3.16.1"
+  resolved "https://registry.yarnpkg.com/terser/-/terser-3.16.1.tgz#5b0dd4fa1ffd0b0b43c2493b2c364fd179160493"
+  integrity sha512-JDJjgleBROeek2iBcSNzOHLKsB/MdDf+E/BOAJ0Tk9r7p9/fVobfv7LMJ/g/k3v9SXdmjZnIlFd5nfn/Rt0Xow==
   dependencies:
     commander "~2.17.1"
     source-map "~0.6.1"
-    source-map-support "~0.5.6"
+    source-map-support "~0.5.9"
 
 text-table@~0.2.0:
   version "0.2.0"