Bump puppeteer from 1.20.0 to 8.0.0 in /web/wats

Bumps [puppeteer](https://github.com/puppeteer/puppeteer) from 1.20.0 to 8.0.0.
- [Release notes](https://github.com/puppeteer/puppeteer/releases)
- [Changelog](https://github.com/puppeteer/puppeteer/blob/main/CHANGELOG.md)
- [Commits](puppeteer/puppeteer@v1.20.0...v8.0.0)

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

web/wats/package.json

@@ -7,7 +7,7 @@
     "ava": "^3.13.0",
     "child-process-promise": "^2.2.1",
     "color": "^3.1.2",
-    "puppeteer": "^1.19.0",
+    "puppeteer": "^8.0.0",
     "tmp-promise": "^2.0.2",
     "uuid": "^3.3.2"
   },