ci: Upgrade zstd to match dependency of parquet-hadoop 1.18.1

[kfaraz]

org.apache.parquet:parquet-hadoop:1.18.1 depends on com.github.luben:zstd-jni:1.5.7-15

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This PR has:

• been self-reviewed.
  • using the concurrency checklist (Remove this item if the PR doesn't have any relation to concurrency.)
• added documentation for new or modified features or behaviors.
• a release note entry in the PR description.
• added Javadocs for most classes and all non-trivial methods. Linked related entities via Javadoc links.
• added or updated version, license, or notice information in licenses.yaml
• added comments explaining the "why" and the intent of the code wherever would not be obvious for an unfamiliar reader.
• added unit tests or modified existing tests to cover new code paths, ensuring the threshold for code coverage is met.
• added integration tests.
• been tested in a test Druid cluster.

[FrankChen021]

upgrading the zstd is deliberately closed in #20110 as it might cause incompatibility.

does parquet-hadoop:1.18.1 depenonds on any new API in com.github.luben:zstd-jni:1.5.7-15 ?

[FrankChen021]

#20258
also deliberated excluded the zstd from the parquet-hadoop.

[FrankChen021]

Severity	Findings
P0	0
P1	0
P2	1
P3	0
Total	1

Reviewed 2 of 2 changed files.

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This is an automated review by Codex GPT-5.6-Luna(max)

[FrankChen021]

[P2] Upgrading past -12 drops legacy Zstandard decoding

zstd-jni documents 1.5.7-12 as the last release that supports the legacy 0.4–0.7 formats; 1.5.7-15 removes them (see https://github.com/luben/zstd-jni#status-and-availability). Druid exposes .zst as a supported batch-ingestion format, and processing/src/main/java/org/apache/druid/utils/CompressionUtils.java:808-809 constructs ZstdCompressorInputStream from this same dependency, so existing legacy .zst inputs that worked with 1.5.7-11 will now fail during ingestion. Please retain a legacy-capable version (if Parquet works with it) or explicitly handle, document, and test this compatibility break before merging.

[kfaraz]

Thanks a lot for calling this out, @FrankChen021 and for providing the context!

[kfaraz]

does parquet-hadoop:1.18.1 depenonds on any new API in com.github.luben:zstd-jni:1.5.7-15 ?

Not that I am aware of. Closing this off for now unless someone in the community reports any implementation gap.