ci: align package_c TensorFlow image and wheel to 2.20

[njzjz-bot]

Summary

• switch the package_c Docker build image from TensorFlow 2.18 to 2.20
• pin the installed TensorFlow wheel to ==2.20.* via the existing TENSORFLOW_VERSION env

Why

The failing Build C library job appears to be in package_c.yml, not in the cibuildwheel workflow changed by dependabot.

This change makes the Docker image and installed TensorFlow version move together, so we can test whether the failure was caused by a TensorFlow / GLIBC mismatch from pulling a newer wheel into an older build image.

Authored by OpenClaw (model: gpt-5.4)

Summary by CodeRabbit

• Chores
  • Updated C library build configuration to target TensorFlow 2.20, aligning the build matrix with the newer TensorFlow runtime.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Pro

Run ID: ea7139b5-8774-4705-bfcd-31823e613f01

📥 Commits

Reviewing files that changed from the base of the PR and between e0d357d and d801888.

📒 Files selected for processing (1)

• .github/workflows/package_c.yml

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📝 Walkthrough

Walkthrough

Updated the Build C library CI workflow matrix in .github/workflows/package_c.yml: tensorflow_build_version changed from 2.18 to 2.20 and tensorflow_version set to ==2.20.*. No other workflow steps, conditional logic, or exported declarations were modified.

Changes

Cohort / File(s)	Summary
CI Configuration .github/workflows/package_c.yml	Updated matrix entries: tensorflow_build_version from 2.18 → 2.20; tensorflow_version set from "" → ==2.20.*. No other changes to steps or logic.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~5 minutes

Possibly related PRs

• fix(tf): fix compatibility with TF 2.20 #4890 — Changes to CI/devcontainer and code to address TensorFlow 2.20 compatibility.
• ci: bump tensorflow/build image to 2.18 #4252 — Prior bump of tensorflow_build_version in the same workflow file.
• fix(CI): pin protobuf<7.34 #5272 — Pins tensorflow-cpu==2.20.0, related to TensorFlow version changes.

Suggested reviewers

• wanghan-iapcm
• iProzd

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'ci: align package_c TensorFlow image and wheel to 2.20' directly reflects the main change: updating the TensorFlow build matrix version from 2.18 to 2.20 in the package_c workflow.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing Touches

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against the current code and only fix it if needed.

Inline comments:
In @.github/workflows/package_c.yml:
- Around line 24-25: The workflow uses a non-existent Docker image tag
(tensorflow/build:2.21-python3.11) via the
tensorflow_build_version/tensorflow_version entries in package_c.yml; revert the
tensorflow_build_version to a published tag (or pin tensorflow_version to an
available version) and/or wait for TensorFlow to publish 2.21 before changing
these values, and then update the test matrices in test_cc.yml and
test_python.yml to include 2.21 as well so C library builds and integration
tests run against the same TensorFlow version once the image is available.

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Pro

Run ID: d949bcd4-bab9-4170-9550-a40c7050c5ad

📥 Commits

Reviewing files that changed from the base of the PR and between 8f2b3c9 and 17cf613.

📒 Files selected for processing (1)

• .github/workflows/package_c.yml

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 82.32%. Comparing base (8f2b3c9) to head (d801888).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #5297   +/-   ##
=======================================
  Coverage   82.31%   82.32%           
=======================================
  Files         768      768           
  Lines       77098    77097    -1     
  Branches     3660     3660           
=======================================
+ Hits        63467    63469    +2     
+ Misses      12458    12457    -1     
+ Partials     1173     1171    -2     

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