Infrastructure: Update link-checker User-Agent string (#3264)

Updates the User-Agent string to be more up-to-date. Outdated versions in the previous string prevented navigation to certain websites.

Author: howard-e

scripts/link-checker.js

@@ -154,8 +154,13 @@ async function checkLinks() {
               headers: {
                 // Spoof a normal looking User-Agent to keep the servers happy
                 // See https://github.com/JustinBeckwith/linkinator/blob/main/src/index.ts
+                //
+                // To better future-proof against the ua string being
+                // responsible for any breakage, pull common, up-to-date strings
+                // from a reliable source.
+                // https://github.com/w3c/aria-practices/issues/3270
                 'User-Agent':
-                  'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.117 Safari/537.36',
+                  'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Chrome/134.0.0.0 Safari/605.1.1',
               },
             });
             const text = await response.text();