Support for wildcard in UV_INSECURE_HOST (#8052)
Allow '*' as a value to match all hosts, and provide
`reqwest_blocking_get` for uv tests, so that they also respect
UV_INSECURE_HOST (since they respect `ALL_PROXY`).
This lets those tests pass with a forward proxy - we can think about
setting a root certificate later so that we don't need to disable
certificate verification at all.
---
I tested this locally by running:
```bash
GIT_SSL_NO_VERIFY=true ALL_PROXY=localhost:8080 UV_INSECURE_HOST="*" cargo nextest run sync_wheel_path_source_error
```
With my forward proxy showing:
```
2024-10-09T18:20:16.300188Z INFO fopro: Proxied GET https://files.pythonhosted.org/packages/08/fd/cc2fedbd887223f9f5d170c96e57cbf655df9831a6546c1727ae13fa977a/cffi-1.17.1-cp310-cp310-macosx_11_0_arm64.whl (headers 480.024958ms + body 92.345666ms)
2024-10-09T18:20:16.913298Z INFO fopro: Proxied GET https://pypi.org/simple/pycparser/ (headers 509.664834ms + body 269.291µs)
2024-10-09T18:20:17.383975Z INFO fopro: Proxied GET https://files.pythonhosted.org/packages/62/d5/5f610ebe421e85889f2e55e33b7f9a6795bd982198517d912eb1c76e1a53/pycparser-2.21-py2.py3-none-any.whl.metadata (headers 443.184208ms + body 2.094792ms)
```
