Fixed windows build and add cypress to dev dependencies.

.github/workflows/windows.yml

@@ -115,16 +115,13 @@ jobs:
             etherpad/src/bin/doc/package-lock.json
       - name: Install npm@6
         run: npm install npm@6 -g
-      -
-        name: Install Cypress
-        run: cd etherpad && npm install cypress --legacy-peer-deps
       -
         name: Run Etherpad
         run: |
           cd etherpad
           npm run prod --prefix ./src
           curl --connect-timeout 10 --max-time 20 --retry 5 --retry-delay 10 --retry-max-time 60 --retry-connrefused http://127.0.0.1:9001/p/test
-          src\node_modules\cypress\bin\cypress run --config-file src\tests\frontendcypress\cypress.config.js
+          src\node_modules\.bin\cypress run --config-file src\tests\frontendcypress\cypress.config.js
       # On release, upload windows zip to GitHub release tab
       -
         name: Rename to etherpad-lite-win.zip

src/package.json

@@ -79,6 +79,7 @@
     "etherpad-lite": "node/server.ts"
   },
   "devDependencies": {
+    "cypress": "^13.6.4",
     "@types/async": "^3.2.24",
     "@types/express": "^4.17.21",
     "@types/node": "^20.11.5",