chore(deps): bump skopeo/stable in /tests in the docker-tests group

Bumps the docker-tests group in /tests with 1 update: [skopeo/stable](https://github.com/containers/image_build).


Updates `skopeo/stable` from v1.16.1 to v1.17.0
- [Commits](https://github.com/containers/image_build/commits)

---
updated-dependencies:
- dependency-name: skopeo/stable
  dependency-type: direct:production
  dependency-group: docker-tests
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

tests/Dockerfile

@@ -3,7 +3,7 @@
 FROM kindest/node:v1.31.2@sha256:18fbefc20a7113353c7b75b5c869d7145a6abd6269154825872dc59c1329912e
 
 # this is here so we can grab the latest version of skopeo and have dependabot keep it up to date
-FROM quay.io/skopeo/stable:v1.16.1
+FROM quay.io/skopeo/stable:v1.17.0
 
 FROM python:3.13@sha256:a31cbb4db18c6f09e3300fa85b77f6d56702501fcb9bdb8792ec702a39ba6200