Bumping gitea SDK to version v0.25.0
Currently there is an issue when users try to use SSH to authenticate to a gitea server. The issue is already reported here #983
The problem was that `*gitea.HTTPSign` embeds `ssh.Signer` (not `ssh.AlgorithmSigner`).
`httpsig v1.2.4` type-asserts the signer to `ssh.AlgorithmSigner` for RSA keys and panics because `*HTTPSign` doesn't expose `SignWithAlgorithm`.
Fix: SDK v0.25.0 adds `SignWithAlgorithm` to `HTTPSign`, satisfying `ssh.AlgorithmSigner`.
Reviewed-on: https://gitea.com/gitea/tea/pulls/984
Reviewed-by: techknowlogick <9+techknowlogick@noreply.gitea.com>
Co-authored-by: Carlos Grillet <carlosbeta5000@gmail.com>
Co-committed-by: Carlos Grillet <carlosbeta5000@gmail.com>
