[submodule-sync] bot-submodule-sync-release/26.02 to release/26.02 [skip ci] [bot]

[nvauto]

submodule-sync to create a PR keeping thirdparty/cudf up-to-date.
HEAD commit SHA: 86607f6, cudf commit SHA: rapidsai/cudf@12f9c2d

This PR will be auto-merged if test passed. If failed, it will remain open until test pass or manually fix.

[nvauto]

HEAD commit SHA: 86607f6, CUDF commit SHA: rapidsai/cudf@12f9c2d
Test passed: True

[nvauto]

SUCCESS - auto-merge

[greptile-apps]

Greptile Overview

Greptile Summary

This PR is a submodule sync for thirdparty/cudf, updating the submodule pointer to cudf commit 12f9c2d7... and aligning pinned dependency SHAs in thirdparty/cudf-pins (rapids-cmake.sha, plus kvikio and rmm git_tags in versions.json). These changes keep the vendored cudf build inputs consistent with the new cudf revision, without modifying any JNI or Spark-rapids-jni source code.

Confidence Score: 4/5

• This PR is likely safe to merge, as it only updates a submodule pointer and associated pin files.
• Diff is limited to bumping the cudf submodule SHA and updating corresponding pinned SHAs; no local code paths were changed. Confidence is reduced slightly because the review cannot validate that the new pinned SHAs are compatible without CI/build validation in this environment.
• thirdparty/cudf-pins/versions.json (ensure downstream build/CI validates these pins)

Important Files Changed

Filename	Overview
thirdparty/cudf	Updates the cudf git submodule pointer from b559a953... to 12f9c2d7.... No local code changes.
thirdparty/cudf-pins/rapids-cmake.sha	Bumps pinned rapids-cmake SHA from 32fae091... to 3f454a5b.... File remains a single-line SHA.
thirdparty/cudf-pins/versions.json	Updates pinned git_tag SHAs for kvikio and rmm in the cudf dependency versions list; JSON structure unchanged.

Sequence Diagram

sequenceDiagram
  participant Bot as nvauto (submodule-sync bot)
  participant Repo as spark-rapids-jni
  participant Sub as thirdparty/cudf (submodule)
  participant Pins as thirdparty/cudf-pins

  Bot->>Repo: Update submodule pointer (thirdparty/cudf)
  Repo->>Sub: b559a953... -> 12f9c2d7...
  Bot->>Pins: Update rapids-cmake.sha
  Pins-->>Pins: 32fae091... -> 3f454a5b...
  Bot->>Pins: Update versions.json pins
  Pins-->>Pins: kvikio git_tag e07a282... -> 1a3b44c...
  Pins-->>Pins: rmm git_tag 0e93e8f... -> 498dafc...
  Bot-->>Repo: Commit "Update pinned versions for cudf ..."

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[greptile-apps]

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