regression fix for flash: fix ruffle.js not loading (reported via webrecorder/archiveweb.page#121) via wabac.js

opt: check if ruffle.js exists before injecting into page (via wabac.js)
deps: update wabac.js 2.13.11, update ruffle to 2022-11-25 version
bump to 1.7.6

_data/package.json

@@ -1,7 +1,7 @@
 {
   "name": "replaywebpage",
   "productName": "ReplayWeb.page",
-  "version": "1.7.5",
+  "version": "1.7.6",
   "description": "Serverless Web Archive Replay",
   "repository": "https://github.com/webrecorder/replayweb.page",
   "homepage": "https://replayweb.page/",
@@ -9,7 +9,7 @@
   "license": "AGPL-3.0-or-later",
   "dependencies": {
     "@fortawesome/fontawesome-free": "^5.15.4",
-    "@webrecorder/wabac": "^2.13.10",
+    "@webrecorder/wabac": "^2.13.11",
     "auto-js-ipfs": "^1.5.1",
     "bulma": "^0.9.3",
     "electron-log": "^4.4.1",