chore(opa) bump to 1.0.0 in integration tests and docs

[Maleware]

Description

Part of: stackabletech/docker-images#969

Definition of Done Checklist

• Not all of these items are applicable to all PRs, the author should update this template to only leave the boxes in that are relevant
• Please make sure all these things are done and tick the boxes

# Author
- [ ] Changes are OpenShift compatible
- [ ] CRD changes approved
- [ ] CRD documentation for all fields, following the [style guide](https://docs.stackable.tech/home/nightly/contributor/docs/style-guide).
- [ ] Helm chart can be installed and deployed operator works
- [ ] Integration tests passed (for non trivial changes)
- [ ] Changes need to be "offline" compatible

# Reviewer
- [ ] Code contains useful comments
- [ ] Code contains useful logging statements
- [ ] (Integration-)Test cases added
- [ ] Documentation added or updated. Follows the [style guide](https://docs.stackable.tech/home/nightly/contributor/docs/style-guide).
- [ ] Changelog updated
- [ ] Cargo.toml only contains references to git tags (not specific commits or branches)

# Acceptance
- [ ] Feature Tracker has been updated
- [ ] Proper release label has been added
- [ ] [Roadmap](https://github.com/orgs/stackabletech/projects/25/views/1) has been updated

[Maleware]

--- PASS: kuttl (317.87s)
    --- PASS: kuttl/harness (0.00s)
        --- PASS: kuttl/harness/opa-authorization_trino-latest-455_hive-latest-4.0.0_opa-1.0.0_keycloak-25.0.0_openshift-false (317.84s)
PASS

[sbernauer]

Can you please also remove all import rego.v1?

[Maleware]

done with cf4a634

Thank you

[sbernauer]

Thanks!