Release 3.3 update #1

[karol-kokoszka]

This PR is created out of GH comparison between branch-3.3 and master.

Update ScyllaDB version to: 3.4.dev -> is going to be removed manually after creating this PR (will be excluded from PR)

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Please make sure that:

• Code is split to commits that address a single change
• Commit messages are informative
• Commit titles have module prefix
• Commit titles have issue nr. suffix

[karol-kokoszka]

Closed as I cannot remove single commit....