chore: use code.forgejo.org/forgejo/actions-proto (#9981)

instead of code.gitea.io/actions-proto-go

It is a hard fork of code.gitea.io/actions-proto-go which has been used by the runner in the past few months.

Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/9981
Reviewed-by: Michael Kriese <michael.kriese@gmx.de>
Co-authored-by: Earl Warren <contact@earl-warren.org>
Co-committed-by: Earl Warren <contact@earl-warren.org>

go.mod

@@ -7,6 +7,7 @@ toolchain go1.25.3
 require (
 	code.forgejo.org/f3/gof3/v3 v3.11.1
 	code.forgejo.org/forgejo-contrib/go-libravatar v0.0.0-20191008002943-06d1c002b251
+	code.forgejo.org/forgejo/actions-proto v0.5.3
 	code.forgejo.org/forgejo/go-rpmutils v1.0.0
 	code.forgejo.org/forgejo/levelqueue v1.0.0
 	code.forgejo.org/forgejo/reply v1.0.2
@@ -15,7 +16,6 @@ require (
 	code.forgejo.org/go-chi/cache v1.0.1
 	code.forgejo.org/go-chi/captcha v1.0.2
 	code.forgejo.org/go-chi/session v1.0.2
-	code.gitea.io/actions-proto-go v0.4.0
 	code.gitea.io/sdk/gitea v0.21.0
 	code.superseriousbusiness.org/exif-terminator v0.11.0
 	code.superseriousbusiness.org/go-jpeg-image-structure/v2 v2.3.0