Bump browserslist from 4.16.3 to 4.16.8 in /assets

Bumps [browserslist](https://github.com/browserslist/browserslist) from 4.16.3 to 4.16.8.
- [Release notes](https://github.com/browserslist/browserslist/releases)
- [Changelog](https://github.com/browserslist/browserslist/blob/main/CHANGELOG.md)
- [Commits](https://github.com/browserslist/browserslist/compare/4.16.3...4.16.8)

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

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

assets/package-lock.json

@@ -1897,16 +1897,42 @@
       }
     },
     "browserslist": {
-      "version": "4.16.3",
-      "resolved": "https://registry.npmjs.org/browserslist/-/browserslist-4.16.3.tgz",
-      "integrity": "sha512-vIyhWmIkULaq04Gt93txdh+j02yX/JzlyhLYbV3YQCn/zvES3JnY7TifHHvvr1w5hTDluNKMkV05cs4vy8Q7sw==",
+      "version": "4.16.8",
+      "resolved": "https://registry.npmjs.org/browserslist/-/browserslist-4.16.8.tgz",
+      "integrity": "sha512-sc2m9ohR/49sWEbPj14ZSSZqp+kbi16aLao42Hmn3Z8FpjuMaq2xCA2l4zl9ITfyzvnvyE0hcg62YkIGKxgaNQ==",
       "dev": true,
       "requires": {
-        "caniuse-lite": "^1.0.30001181",
-        "colorette": "^1.2.1",
-        "electron-to-chromium": "^1.3.649",
+        "caniuse-lite": "^1.0.30001251",
+        "colorette": "^1.3.0",
+        "electron-to-chromium": "^1.3.811",
         "escalade": "^3.1.1",
-        "node-releases": "^1.1.70"
+        "node-releases": "^1.1.75"
+      },
+      "dependencies": {
+        "caniuse-lite": {
+          "version": "1.0.30001252",
+          "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001252.tgz",
+          "integrity": "sha512-I56jhWDGMtdILQORdusxBOH+Nl/KgQSdDmpJezYddnAkVOmnoU8zwjTV9xAjMIYxr0iPreEAVylCGcmHCjfaOw==",
+          "dev": true
+        },
+        "colorette": {
+          "version": "1.3.0",
+          "resolved": "https://registry.npmjs.org/colorette/-/colorette-1.3.0.tgz",
+          "integrity": "sha512-ecORCqbSFP7Wm8Y6lyqMJjexBQqXSF7SSeaTyGGphogUjBlFP9m9o08wy86HL2uB7fMTxtOUzLMk7ogKcxMg1w==",
+          "dev": true
+        },
+        "electron-to-chromium": {
+          "version": "1.3.820",
+          "resolved": "https://registry.npmjs.org/electron-to-chromium/-/electron-to-chromium-1.3.820.tgz",
+          "integrity": "sha512-5cFwDmo2yzEA9hn55KZ9+cX/b6DSFvpKz8Hb2fiDmriXWB+DBoXKXmncQwNRFBBTlUdsvPHCoy594OoMLAO0Tg==",
+          "dev": true
+        },
+        "node-releases": {
+          "version": "1.1.75",
+          "resolved": "https://registry.npmjs.org/node-releases/-/node-releases-1.1.75.tgz",
+          "integrity": "sha512-Qe5OUajvqrqDSy6wrWFmMwfJ0jVgwiw4T3KqmbTcZ62qW0gQkheXYhcFM1+lOVcGUoRxcEcfyvFMAnDgaF1VWw==",
+          "dev": true
+        }
       }
     },
     "buffer": {
@@ -3248,12 +3274,6 @@
         "safer-buffer": "^2.1.0"
       }
     },
-    "electron-to-chromium": {
-      "version": "1.3.701",
-      "resolved": "https://registry.npmjs.org/electron-to-chromium/-/electron-to-chromium-1.3.701.tgz",
-      "integrity": "sha512-Zd9ofdIMYHYhG1gvnejQDvC/kqSeXQvtXF0yRURGxgwGqDZm9F9Fm3dYFnm5gyuA7xpXfBlzVLN1sz0FjxpKfw==",
-      "dev": true
-    },
     "elliptic": {
       "version": "6.5.4",
       "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.5.4.tgz",
@@ -5648,12 +5668,6 @@
       "integrity": "sha512-UdS4swXs85fCGWWf6t6DMGgpN/vnlKeSGEQ7hJcrs7PBFoxoKLmibc3QRb7fwiYsjdL7PX8iI/TMSlZ90dgHhQ==",
       "dev": true
     },
-    "node-releases": {
-      "version": "1.1.71",
-      "resolved": "https://registry.npmjs.org/node-releases/-/node-releases-1.1.71.tgz",
-      "integrity": "sha512-zR6HoT6LrLCRBwukmrVbHv0EpEQjksO6GmFcZQQuCAy139BEsoVKPYnf3jongYW83fAa1torLGYwxxky/p28sg==",
-      "dev": true
-    },
     "node-sass": {
       "version": "4.14.1",
       "resolved": "https://registry.npmjs.org/node-sass/-/node-sass-4.14.1.tgz",