build: go 1.24

We were running behind and there were quite some deprecations to update.
This was mostly in the upstream copy/pasta package but seems quite
minimal.

vendor/github.com/go-git/go-git/v5/plumbing/transport/http/common.go

@@ -17,6 +17,7 @@ import (
 
 	"github.com/go-git/go-git/v5/plumbing"
 	"github.com/go-git/go-git/v5/plumbing/protocol/packp"
+	"github.com/go-git/go-git/v5/plumbing/protocol/packp/capability"
 	"github.com/go-git/go-git/v5/plumbing/transport"
 	"github.com/go-git/go-git/v5/utils/ioutil"
 	"github.com/golang/groupcache/lru"
@@ -24,7 +25,7 @@ import (
 
 // it requires a bytes.Buffer, because we need to know the length
 func applyHeadersToRequest(req *http.Request, content *bytes.Buffer, host string, requestType string) {
-	req.Header.Add("User-Agent", "git/1.0")
+	req.Header.Add("User-Agent", capability.DefaultAgent())
 	req.Header.Add("Host", host) // host:port
 
 	if content == nil {

vendor/github.com/go-git/go-git/v5/worktree.go

@@ -425,8 +425,9 @@ func (w *Worktree) resetIndex(t *object.Tree, dirs []string, files []string) err
 }
 
 func inFiles(files []string, v string) bool {
+	v = filepath.Clean(v)
 	for _, s := range files {
-		if s == v {
+		if filepath.Clean(s) == v {
 			return true
 		}
 	}

vendor/github.com/go-git/go-git/v5/worktree_status.go

@@ -370,6 +370,8 @@ func (w *Worktree) doAdd(path string, ignorePattern []gitignore.Pattern, skipSta
 		}
 	}
 
+	path = filepath.Clean(path)
+
 	if err != nil || !fi.IsDir() {
 		added, h, err = w.doAddFile(idx, s, path, ignorePattern)
 	} else {