chore: Add OPA 1.12.2, remove 1.4.2

[NickLarsenNZ]

Part of stackabletech/docker-images#1378
Part of stackabletech/docker-images#1369

• Add OPA 1.12.2, deprecate 1.8.0, remove 1.4.2.
• Update vector to 0.52.0 (Chart version 0.49.0).

Description

Please add a description here. This will become the commit message of the merge request later.

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.
• Helm chart can be installed and deployed operator works
• Integration tests passed (for non trivial changes)
• Changes need to be "offline" compatible
• Links to generated (nightly) docs added
• Release note snippet added

Reviewer

• Code contains useful comments
• Code contains useful logging statements
• (Integration-)Test cases added
• Documentation added or updated. Follows the 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
• Links to generated (nightly) docs added
• Release note snippet added
• Add type/deprecation label & add to the deprecation schedule
• Add type/experimental label & add to the experimental features tracker

[NickLarsenNZ]

Smoke tests pass:

--- PASS: kuttl (123.39s)
    --- PASS: kuttl/harness (0.00s)
        --- PASS: kuttl/harness/smoke_opa-1.12.2_openshift-false_use-tls-false (60.23s)
        --- PASS: kuttl/harness/smoke_opa-1.12.2_openshift-false_use-tls-true (63.15s)
PASS