chore: Bump stackable-operator to 0.87.5

[xeniape]

Description

--- PASS: kuttl (388.52s)
    --- PASS: kuttl/harness (0.00s)
        --- PASS: kuttl/harness/znode_zookeeper-latest-3.9.3_openshift-false (44.01s)
        --- PASS: kuttl/harness/smoke_zookeeper-3.9.2_use-server-tls-false_use-client-auth-tls-false_openshift-false (70.11s)
        --- PASS: kuttl/harness/smoke_zookeeper-3.9.2_use-server-tls-true_use-client-auth-tls-true_openshift-false (126.15s)
        --- PASS: kuttl/harness/smoke_zookeeper-3.9.3_use-server-tls-true_use-client-auth-tls-true_openshift-false (126.40s)
        --- PASS: kuttl/harness/smoke_zookeeper-3.9.2_use-server-tls-true_use-client-auth-tls-false_openshift-false (74.02s)
        --- PASS: kuttl/harness/smoke_zookeeper-3.9.2_use-server-tls-false_use-client-auth-tls-true_openshift-false (71.69s)
        --- PASS: kuttl/harness/smoke_zookeeper-3.9.3_use-server-tls-false_use-client-auth-tls-true_openshift-false (75.67s)
        --- PASS: kuttl/harness/smoke_zookeeper-3.9.3_use-server-tls-true_use-client-auth-tls-false_openshift-false (68.90s)
        --- PASS: kuttl/harness/logging_zookeeper-3.9.3_openshift-false (60.48s)
        --- PASS: kuttl/harness/logging_zookeeper-3.9.2_openshift-false (59.12s)
        --- PASS: kuttl/harness/delete-rolegroup_zookeeper-3.9.3_openshift-false (40.50s)
        --- PASS: kuttl/harness/cluster-operation_zookeeper-latest-3.9.3_openshift-false (44.20s)
        --- PASS: kuttl/harness/smoke_zookeeper-3.9.3_use-server-tls-false_use-client-auth-tls-false_openshift-false (55.23s)
        --- PASS: kuttl/harness/delete-rolegroup_zookeeper-3.9.2_openshift-false (89.68s)
PASS

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

[NickLarsenNZ]

LGTM, just a formatting suggestion

[NickLarsenNZ]

LGTM