chore: Bump golang.org/x/sync in the experimental-golang-deps group

Bumps the experimental-golang-deps group with 1 update: [golang.org/x/sync](https://github.com/golang/sync).


Updates `golang.org/x/sync` from 0.17.0 to 0.18.0
- [Commits](golang/sync@v0.17.0...v0.18.0)

---
updated-dependencies:
- dependency-name: golang.org/x/sync
  dependency-version: 0.18.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: experimental-golang-deps
...

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

Author: dependabot[bot]

go.mod

@@ -25,7 +25,7 @@ require (
 	go.etcd.io/bbolt v1.4.3
 	go.uber.org/mock v0.6.0
 	golang.org/x/exp v0.0.0-20250718183923-645b1fa84792
-	golang.org/x/sync v0.17.0
+	golang.org/x/sync v0.19.0
 	gopkg.in/yaml.v3 v3.0.1
 	mvdan.cc/sh/v3 v3.12.0
 )

go.sum

@@ -252,8 +252,8 @@ golang.org/x/mod v0.27.0 h1:kb+q2PyFnEADO2IEF935ehFUXlWiNjJWtRNgBLSfbxQ=
 golang.org/x/mod v0.27.0/go.mod h1:rWI627Fq0DEoudcK+MBkNkCe0EetEaDSwJJkCcjpazc=
 golang.org/x/net v0.43.0 h1:lat02VYK2j4aLzMzecihNvTlJNQUq316m2Mr9rnM6YE=
 golang.org/x/net v0.43.0/go.mod h1:vhO1fvI4dGsIjh73sWfUVjj3N7CA9WkKJNQm2svM6Jg=
-golang.org/x/sync v0.17.0 h1:l60nONMj9l5drqw6jlhIELNv9I0A4OFgRsG9k2oT9Ug=
-golang.org/x/sync v0.17.0/go.mod h1:9KTHXmSnoGruLpwFjVSX0lNNA75CykiMECbovNTZqGI=
+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/sys v0.0.0-20210809222454-d867a43fc93e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.1.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=