Bump golang.org/x/sync in the all-go-mod-patch-and-minor group

Bumps the all-go-mod-patch-and-minor group with 1 update: [golang.org/x/sync](https://github.com/golang/sync).


Updates `golang.org/x/sync` from 0.19.0 to 0.20.0
- [Commits](golang/sync@v0.19.0...v0.20.0)

---
updated-dependencies:
- dependency-name: golang.org/x/sync
  dependency-version: 0.20.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: all-go-mod-patch-and-minor
...

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

Author: dependabot[bot]

go.mod

@@ -1,6 +1,6 @@
 module github.com/zalando-incubator/stackset-controller
 
-go 1.24.0
+go 1.25.0
 
 require (
 	github.com/alecthomas/kingpin v2.2.6+incompatible
@@ -11,7 +11,7 @@ require (
 	github.com/sirupsen/logrus v1.9.4
 	github.com/stretchr/testify v1.11.1
 	github.com/szuecs/routegroup-client v0.34.1
-	golang.org/x/sync v0.19.0
+	golang.org/x/sync v0.20.0
 	k8s.io/api v0.34.5
 	k8s.io/apimachinery v0.34.5
 	k8s.io/client-go v0.34.5

go.sum

@@ -197,8 +197,8 @@ golang.org/x/oauth2 v0.30.0/go.mod h1:B++QgG3ZKulg6sRPGD/mqlHQs5rB3Ml9erfeDY7xKl
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.19.0 h1:vV+1eWNmZ5geRlYjzm2adRgW2/mcpevXNg50YZtPCE4=
-golang.org/x/sync v0.19.0/go.mod h1:9KTHXmSnoGruLpwFjVSX0lNNA75CykiMECbovNTZqGI=
+golang.org/x/sync v0.20.0 h1:e0PTpb7pjO8GAtTs2dQ6jYa5BWYlMuX047Dco/pItO4=
+golang.org/x/sync v0.20.0/go.mod h1:9xrNwdLfx4jkKbNva9FpL6vEN7evnE43NNNJQ2LF3+0=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=