feat: upgrade puppeteer and puppeteer-core to v23 (#2791)

Author: web-padawan

.changeset/rude-scissors-provide.md

@@ -0,0 +1,8 @@
+---
+'@web/test-runner-visual-regression': minor
+'@web/test-runner-puppeteer': minor
+'@web/test-runner-chrome': minor
+'@web/test-runner': minor
+---
+
+Upgrade puppeteer-core and puppeteer to v23

docs/docs/test-runner/browser-launchers/puppeteer.md

@@ -124,7 +124,7 @@ Testing Firefox with Puppeteer is still experimental. There is currently no offi
 ```json
 {
   "scripts": {
-    "postinstall": "cd node_modules/puppeteer && PUPPETEER_PRODUCT=firefox node install.js"
+    "postinstall": "cd node_modules/puppeteer && PUPPETEER_BROWSER=firefox node install.js"
   }
 }
 ```