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Fix "http: invalid Host header" issue (#319)

This issue  is caused by the addition of validation logic for `Host` in `http.Request` in golang 1.20.6 (see https://go-review.googlesource.com/c/go/+/507357/6/src/net/http/request.go)

In `act`, when execute `ContainerExecAttach()`(see https://gitea.com/gitea/act/src/commit/22d91e3ac3740bb00e8ec044026f028f811cfb61/pkg/container/docker_run.go#L594), the actual value of `request.Host` is `"/var/run/docker.sock"`. This does not conform to the specification described in `validhostHeader`.
 <details> <summary>ValidHostHeader()</summary>

![image](/attachments/57fb13ba-1c74-47f6-ac48-231a72a1947e)
</details>
So this PR follow upstream: https://github.com/nektos/act/pull/1917 and revert https://gitea.com/gitea/act_runner/pulls/295

Reviewed-on: https://gitea.com/gitea/act_runner/pulls/319
Reviewed-by: Jason Song <i@wolfogre.com>
Co-authored-by: sillyguodong <gedong_1994@163.com>
Co-committed-by: sillyguodong <gedong_1994@163.com>
This commit was merged in pull request #319.
This commit is contained in:
Internal Server Error - Gitea: Git with a cup of tea
500 Internal Server Error

Gitea Version: 1.28.0+dev-528-ga5a645824f