Miniconda download fails

Firstly, I would like to express my gratitude for the release of the Windows version☺️

I tried to install it immediately, but I encountered an error at the initial stage and couldn't proceed.

```
Install Conda (1 / 5)

Install conda error: Error downloading from https://repo.anaconda.com/miniconda/Miniconda3-latest-Windows-x86_64.exe: request to https://repo.anaconda.com/miniconda/Miniconda3-latest-Windows-x86_64.exe failed, reason: connect ETIMEDOUT 2606:4700::6810:8203:443, FetchError: request to https://repo.anaconda.com/miniconda/Miniconda3-latest-Windows-x86_64.exe failed, reason: connect ETIMEDOUT 2606:4700::6810:8203:443 at ClientRequest.

(C:\Users\---\AppData\Local\Programs\comflowy\resources\app.asar\layers\main\dist\index.js:95296:14) at ClientRequest.emit (node:events:517:28) at TLSSocket.socketErrorListener (node:_http_client:501:9) at TLSSocket.emit (node:events:517:28) at emitErrorNT (node:internal/streams/destroy:151:8) at emitErrorCloseNT (node:internal/streams/destroy:116:3) at process.processTicksAndRejections (node:internal/process/task_queues:82:21)
```

The internet condition is relatively stable, and I tried turning off the firewall but it had no effect.

The error occurs in the conda installation step, likely in the download logic within the main layer's index.js file. Examine the network request handling and timeout settings for the Miniconda download URL. Check if there are fallback mirrors or retry mechanisms, and verify the download function's error handling. Testing involves simulating a network timeout to see if the error is caught and reported appropriately.

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