CNDB-14798: Upgrade to jvector 4.0.0-rc1

[michaeljmarshall]

(cherry picked from commit 16efd4c)

What is the issue

Fixes: https://github.com/riptano/cndb/issues/14798

What does this PR fix and why was it fixed

Upgrade jvector from 4.0.0-beta.5 to 4.0.0-rc1.

Here is the list of commits included in the upgrade: datastax/jvector@4.0.0-beta.5...4.0.0-rc.1

Here is a copy of the relevant CHANGELOG.md lines:

4.0.0-rc.1

• Fix issue when calling cleanup while concurrently executing searches #483
• Improve the efficiency and memory usage of GraphIndexBuilder.cleanup #477
• add PQ training benchmark #482
• Remove extraneous character from datasets.yml #484
• Upgrade YAML files to v5 after the format was introduced in the last update #478
• New chunked memory-mapped reader that supports >2GB files 61bffbe
• release 4.0.0-rc.1 6737596
• Fix comparison in TestADCGraphIndex b637f65

4.0.0-beta.6

13 June 2025

• Add a new graph node using a search score #473
• chore(release): Bump tag version and update changelog #471
• Sequential disk writer (STAR-1431 Make sure SSTableWatcher is called in Trie SSTable open #475). Upgrades file format from 4 to 5 d0ccb32
• Allow empty sections in datasets.yml & add colbert-1M.yml 2bf5f9a
• chore (release): Start release version 4.0.0-beta.6 9a453a3

[github-actions]

Checklist before you submit for review

• Make sure there is a PR in the CNDB project updating the Converged Cassandra version
• Use NoSpamLogger for log lines that may appear frequently in the logs
• Verify test results on Butler
• Test coverage for new/modified code is > 80%
• Proper code formatting
• Proper title for each commit staring with the project-issue number, like CNDB-1234
• Each commit has a meaningful description
• Each commit is not very long and contains related changes
• Renames, moves and reformatting are in distinct commits
• All new files should contain the DataStax copyright header instead of the Apache License one

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
90.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[cassci-bot]

❌ Build ds-cassandra-pr-gate/PR-1868 rejected by Butler

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1 new test failure(s) in 1 builds
See build details here

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Found 1 new test failures

Test	Explanation	Branch history	Upstream history
o.a.c.s.SensorsReadTest.BeforeFirstTest	regression	🔴

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No known test failures found

[tlwillke]

LGTM. Need to ensure the test failures are unrelated and/or flaky.

[marianotepper]

LGTM

[michaeljmarshall]

The failure for org.apache.cassandra.sensors.SensorsReadTest.BeforeFirstTest was a timeout and it failed on a recent main run, so it doesn't look like a regression introduced by this PR. Further, this PR doesn't touch anything related to that test, making it even less likely to be a regression.