Bump github.com/onsi/ginkgo/v2 from 2.25.3 to 2.26.0 in /tests (#673)

Bumps [github.com/onsi/ginkgo/v2](https://github.com/onsi/ginkgo) from 2.25.3 to 2.26.0.
- [Release notes](https://github.com/onsi/ginkgo/releases)
- [Changelog](https://github.com/onsi/ginkgo/blob/master/CHANGELOG.md)
- [Commits](https://github.com/onsi/ginkgo/compare/v2.25.3...v2.26.0)

---
updated-dependencies:
- dependency-name: github.com/onsi/ginkgo/v2
  dependency-version: 2.26.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: kfox1111 <[email protected]>

tests/go.mod

@@ -3,7 +3,7 @@ module github.com/spiffe/helm-charts/tests
 go 1.24.3
 
 require (
-	github.com/onsi/ginkgo/v2 v2.25.3
+	github.com/onsi/ginkgo/v2 v2.26.0
 	github.com/onsi/gomega v1.38.2
 	helm.sh/helm/v3 v3.19.0
 )
@@ -47,8 +47,10 @@ require (
 	go.yaml.in/yaml/v2 v2.4.2 // indirect
 	go.yaml.in/yaml/v3 v3.0.4 // indirect
 	golang.org/x/crypto v0.41.0 // indirect
+	golang.org/x/mod v0.27.0 // indirect
 	golang.org/x/net v0.43.0 // indirect
 	golang.org/x/oauth2 v0.30.0 // indirect
+	golang.org/x/sync v0.16.0 // indirect
 	golang.org/x/sys v0.35.0 // indirect
 	golang.org/x/term v0.34.0 // indirect
 	golang.org/x/text v0.28.0 // indirect