Bump kreuzwerker/docker from 3.9.0 to 4.2.0 in /infrastructure/instance (#1421)

Bumps [kreuzwerker/docker](https://github.com/kreuzwerker/terraform-provider-docker) from 3.9.0 to 4.2.0.
- [Release notes](https://github.com/kreuzwerker/terraform-provider-docker/releases)
- [Changelog](https://github.com/kreuzwerker/terraform-provider-docker/blob/master/CHANGELOG.md)
- [Commits](kreuzwerker/terraform-provider-docker@v3.9.0...v4.2.0)

---
updated-dependencies:
- dependency-name: kreuzwerker/docker
  dependency-version: 4.2.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Akinola Olutola <akinola.olutola1@nhs.net>
Co-authored-by: Thomas-Boyle <45789537+Thomas-Boyle@users.noreply.github.com>

Author: 3 people

infrastructure/instance/.terraform.lock.hcl

@@ -6,7 +6,7 @@ terraform {
     }
     docker = {
       source  = "kreuzwerker/docker"
-      version = "3.9.0"
+      version = "4.2.0"
     }
   }
   backend "s3" {