Move jobparser from act repository to Gitea (#36699)

The jobparser sub package in act is only used by Gitea. Move it to Gitea
to make it more easier to maintain.

---------

Co-authored-by: Christopher Homberger <christopher.homberger@web.de>

go.mod

@@ -112,6 +112,7 @@ require (
 	github.com/yuin/goldmark-highlighting/v2 v2.0.0-20230729083705-37449abec8cc
 	github.com/yuin/goldmark-meta v1.1.0
 	gitlab.com/gitlab-org/api/client-go v0.142.4
+	go.yaml.in/yaml/v4 v4.0.0-rc.2
 	golang.org/x/crypto v0.47.0
 	golang.org/x/image v0.35.0
 	golang.org/x/net v0.49.0
@@ -294,7 +295,7 @@ ignore (
 
 replace github.com/jaytaylor/html2text => github.com/Necoro/html2text v0.0.0-20250804200300-7bf1ce1c7347
 
-replace github.com/nektos/act => gitea.com/gitea/act v0.261.7-0.20251003180512-ac6e4b751763
+replace github.com/nektos/act => gitea.com/gitea/act v0.261.8
 
 replace git.sr.ht/~mariusor/go-xsd-duration => gitea.com/gitea/go-xsd-duration v0.0.0-20220703122237-02e73435a078