build(deps): bump golang.org/x/sync from 0.14.0 to 0.15.0

Bumps [golang.org/x/sync](https://github.com/golang/sync) from 0.14.0 to 0.15.0.
- [Commits](https://github.com/golang/sync/compare/v0.14.0...v0.15.0)

---
updated-dependencies:
- dependency-name: golang.org/x/sync
  dependency-version: 0.15.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

vendor/golang.org/x/sync/errgroup/errgroup.go

@@ -76,10 +76,8 @@ func (g *Group) Wait() error {
 }
 
 // Go calls the given function in a new goroutine.
-// The first call to Go must happen before a Wait.
-// It blocks until the new goroutine can be added without the number of
-// active goroutines in the group exceeding the configured limit.
 //
+// The first call to Go must happen before a Wait.
 // It blocks until the new goroutine can be added without the number of
 // goroutines in the group exceeding the configured limit.
 //
@@ -185,8 +183,9 @@ type PanicError struct {
 }
 
 func (p PanicError) Error() string {
-	// A Go Error method conventionally does not include a stack dump, so omit it
-	// here. (Callers who care can extract it from the Stack field.)
+	if len(p.Stack) > 0 {
+		return fmt.Sprintf("recovered from errgroup.Group: %v\n%s", p.Recovered, p.Stack)
+	}
 	return fmt.Sprintf("recovered from errgroup.Group: %v", p.Recovered)
 }
 

vendor/modules.txt

@@ -2216,7 +2216,7 @@ golang.org/x/net/trace
 ## explicit; go 1.23.0
 golang.org/x/oauth2
 golang.org/x/oauth2/internal
-# golang.org/x/sync v0.14.0
+# golang.org/x/sync v0.15.0
 ## explicit; go 1.23.0
 golang.org/x/sync/errgroup
 golang.org/x/sync/semaphore