Update ScyllaDB versions to 6.1.1 and 2024.1.8

[rzetelskik]

Description of your changes: This PR updates the default ScyllaDB version used in our tests, manifests, examples and docs to 6.1.0. It also bumps the version used for ScyllaDB Manager restore procedure test for versions 2024.1.Z or older to 2024.1.7. We should be testing against the most recent releases. ScyllaDB OS 6.1.1 and Enterprise 2024.1.8 were released today.

Which issue is resolved by this Pull Request:
Resolves #

/kind feature
/priority important-longterm

[rzetelskik]

@rzetelskik: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name Commit Details Required Rerun command
ci/prow/e2e-gke-parallel 6bd13b4 link true /test e2e-gke-parallel
Full PR test history. Your PR dashboard.

#2061 (comment)
known manager flake
/retest

[rzetelskik]

/test images
/retest

[tnozicka]

#2081 has already suffered one bump rebase and it needs to land for v1.14 - can we please prefer the config and then just use it for the bumps?

[rzetelskik]

#2081 has already suffered one bump rebase and it needs to land for v1.14 - can we please prefer the config and then just use it for the bumps?

I don't mind. Although it would let you decouple from a version bump here b207ad5#diff-e57162373f81f56fc72119a31cad8ea4760deabdbe9298d1fef85c96aaf6ec1dR11

[rzetelskik]

rebased

[tnozicka]

thanks
/approve
/assign @zimnx

[zimnx]

/lgtm

[scylla-operator-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: rzetelskik, tnozicka, zimnx

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