[CI] Pin final Paddle version due to VMM V2 incompatibility

[EmmonsCurse]

Motivation

FastDeploy can no longer safely upgrade to newer Paddle versions.

After PaddlePaddle/Paddle#79605, the VMM V2 allocator is enabled by default. However, FastDeploy's KV Cache IPC mechanism still relies on cudaIpcGetMemHandle, which is incompatible with VMM-allocated memory.

As a result, upgrading to Paddle versions with VMM V2 enabled by default can cause FastDeploy runtime failures during KV Cache initialization.

To maintain FastDeploy runtime stability, the currently compatible Paddle version is pinned as the final supported version. FastDeploy CI will no longer follow subsequent Paddle version upgrades unless the KV Cache IPC mechanism is adapted to support the new allocator.

Modifications

• Pinned the Paddle version used by FastDeploy CI to the current compatible version.
• Prevented CI from automatically upgrading to newer Paddle versions.
• Preserved compatibility with FastDeploy's KV Cache IPC mechanism based on cudaIpcGetMemHandle.
• Pinned the current Paddle version as the final supported version for FastDeploy.
• Stopped tracking subsequent Paddle version upgrades until the KV Cache IPC mechanism is adapted to support VMM-allocated memory.

Usage or Command

N/A

Accuracy Tests

N/A

Checklist

• Add at least a tag in the PR title.
  • Tag list: [[FDConfig],[APIServer],[Engine], [Scheduler], [PD Disaggregation], [Executor], [Graph Optimization], [Speculative Decoding], [RL], [Models], [Quantization], [Loader], [OP], [KVCache], [DataProcessor], [BugFix], [Docs], [CI], [Optimization], [Feature], [Benchmark], [Others], [XPU], [HPU], [GCU], [DCU], [Iluvatar], [Metax]]
  • You can add new tags based on the PR content, but the semantics must be clear.
• Format your code, run pre-commit before commit.
• Add unit tests. Please write the reason in this PR if no unit tests.
• Provide accuracy results.
• If the current PR is submitting to the release branch, make sure the PR has been submitted to the develop branch, then cherry-pick it to the release branch with the [Cherry-Pick] PR tag.

[EmmonsCurse]

/skip-ci ci_iluvatar
/skip-ci ci_hpu
/skip-ci build_xpu

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
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Additional details and impacted files

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  Partials           ?     2884           

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