On https://github.com/mozilla/pdf.js/wiki/Required-Browser-Features we mention required browser features for PDF.js, but I have the feeling that not all of them are necessary nowadays since we moved to using more modern features over the years. Moreover, as indicated in https://github.com/mozilla/pdf.js/issues/11950#issuecomment-637149085, some features may be missing such as range requests or `async/await`.

In short, we should verify which are still necessary and update the wiki page and the automated feature detection if possible.
gulp.task(
  "dist-repo-git",
  gulp.series("dist-pre", function (done) {
    var VERSION = getVersionJSON().version;
    console.log();
    console.log("### Committing changes");
    var reason = process.env.PDFJS_UPDATE_REASON;
    
    if (typeof reason === "string") {
      var reasonParts = /^(See )(mozilla\/pdf\.js)@tags\/(v\d+\.\d+\.\d+)\s*$/.exec(
        reason
      );
      if (reasonParts) {
        reason =
          reasonParts[1] +
          "https://github.com/" +
          reasonParts[2] +
          "/releases/tag/" +
          reasonParts[3];
      }
    }
    var message = "PDF.js version " + VERSION + (reason ? " - " + reason : "");
    safeSpawnSync("git", ["add", "*"], { cwd: DIST_DIR });
    safeSpawnSync("git", ["commit", "-am", message], { cwd: DIST_DIR });
    safeSpawnSync("git", ["tag", "-a", "v" + VERSION, "-m", message], {
      cwd: DIST_DIR,
    });
    console.log();
    console.log("Done. Push with");
    console.log(