When manually installind scrcpy 2.0, the script downloads 1.25 server

**Environment**
- OS: Ubuntu 22.04
- scrcpy version: 2.0
- installation method: Manual build from 2.0 release zip
- device model: n/a
- Android version: n/a

**Describe the bug**
When running the `install_release.sh` for the 2.0 zip it downloads an older version of scrcpy-server.
```
❯ ./install_release.sh
[scrcpy] Downloading prebuilt server...
--2023-04-07 15:00:21-- https://github.com/Genymobile/scrcpy/releases/download/v1.25/scrcpy-server-v1.25
Resolving github.com (github.com)... 140.82.113.4
Connecting to github.com (github.com)|140.82.113.4|:443... connected.
HTTP request sent, awaiting response... 302 Found
...
```

Start with install_release.sh from the scrcpy 2.0 release zip and run it to reproduce the download URL shown in the report. Check how the server version is selected and verify that installation downloads the matching 2.0 server rather than v1.25.

Written by the indexing model from the issue text.