ci(windows): time out the WebView2 install after 5 minutes

It typically takes about 1 minute to run in CI. We don't have any leads
on fixing this issue, and it may be a regression in a recent release of
WebView2. #4935

.github/actions/setup-tauri/action.yml

@@ -25,6 +25,7 @@ runs:
       shell: bash
     - uses: actions/cache@v4
       if: ${{ runner.os == 'Windows' }}
+      timeout-minutes: 5 # Appears to be an issue with WebView. https://github.com/firezone/firezone/pull/4935
       id: cache-webview2-installer
       with:
         path: WebView2Installer.exe