update eletron to v42 (#4144)

additional things:
- removed fix chrome-sandbox permissions (runs without)
- added `npx install-electron` which downloads the electron binaries

new in v42: 

> Electron now downloads its binary into node_modules dynamically on
first launch instead of running a postinstall script. Added the
install-electron script to manually trigger the download as well.
https://github.com/electron/electron/pull/49328

.github/workflows/automated-tests.yaml

@@ -64,9 +64,8 @@ jobs:
           npx playwright install --with-deps chromium
       - name: "Prepare environment for tests"
         run: |
-          # Fix chrome-sandbox permissions:
-          sudo chown root:root ./node_modules/electron/dist/chrome-sandbox
-          sudo chmod 4755 ./node_modules/electron/dist/chrome-sandbox
+          # Download electron binary
+          npx install-electron
           # Start labwc
           WLR_BACKENDS=headless WLR_LIBINPUT_NO_DEVICES=1 WLR_RENDERER=pixman labwc &
           touch config/custom.css

package.json

@@ -123,7 +123,7 @@
 		"express-basic-auth": "^1.2.1",
 		"husky": "^9.1.7",
 		"jsdom": "^29.1.1",
-		"lint-staged": "^16.4.0",
+		"lint-staged": "^17.0.2",
 		"markdownlint-cli2": "^0.22.1",
 		"msw": "^2.14.3",
 		"playwright": "^1.59.1",
@@ -135,7 +135,7 @@
 		"vitest": "^4.1.5"
 	},
 	"optionalDependencies": {
-		"electron": "^41.5.0"
+		"electron": "^42.0.0"
 	},
 	"engines": {
 		"node": ">=22.21.1 <23 || >=24"