chore(deps): bump github.com/onsi/gomega in /plugins/config

Bumps [github.com/onsi/gomega](https://github.com/onsi/gomega) from 1.38.2 to 1.38.3.
- [Release notes](https://github.com/onsi/gomega/releases)
- [Changelog](https://github.com/onsi/gomega/blob/master/CHANGELOG.md)
- [Commits](https://github.com/onsi/gomega/compare/v1.38.2...v1.38.3)

---
updated-dependencies:
- dependency-name: github.com/onsi/gomega
  dependency-version: 1.38.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

plugins/config/go.mod

@@ -5,7 +5,7 @@ go 1.25.1
 require (
 	github.com/dokku/dokku/plugins/common v0.0.0-00010101000000-000000000000
 	github.com/joho/godotenv v1.2.0
-	github.com/onsi/gomega v1.38.2
+	github.com/onsi/gomega v1.38.3
 	github.com/ryanuber/columnize v2.1.2+incompatible
 	github.com/spf13/pflag v1.0.10
 )