ensure nightly builds always produce new packages, expand 'changed-files' lists

[jameslamb]

Contributes to rapidsai/build-planning#218

• uses the new patterns for versioning nightly packages (see builds: add support for computing a date-based version component at build time rapidsai/shared-workflows#603), to ensure they're always uploaded on new builds.

For wheels:

# before
26.10.0a55 

# after
26.10.0a55.post260803200854

And for conda:

# before
26.10.0a55[build=cuda12_260803_9da146ef]

# after
26.10.0a55[build=cuda12_260803200854_9da146ef]

Other changes:

• updates changed-files lists to avoid triggering test jobs in PR CI when only .github/workflows/{build,test}.yaml are changed

Notes for Reviewers

How I tested this

See rapidsai/cugraph-gnn#508

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Enterprise

Run ID: 62b33f88-108e-4dc2-9245-ec7e64f3cf71

📥 Commits

Reviewing files that changed from the base of the PR and between 52a9fbf and 464d613.

📒 Files selected for processing (8)

• .github/workflows/build.yaml
• .github/workflows/pr.yaml
• ci/build_cpp.sh
• ci/build_python.sh
• ci/build_wheel.sh
• conda/recipes/libraft/recipe.yaml
• conda/recipes/pylibraft/recipe.yaml
• conda/recipes/raft-dask/recipe.yaml

---

📝 Walkthrough

Summary by CodeRabbit

• Build and Packaging

  • Build artifacts now include a precise build datetime for clearer version tracking.
  • Python wheels include the build datetime in their post-release version suffix.
  • Conda packages consistently incorporate the datetime into package build metadata.

• CI Improvements

  • Build and pull request validation workflows now share build details consistently, improving traceability across generated artifacts.

• Maintenance

  • Updated copyright information across build and packaging configuration.

Walkthrough

Changes

Build datetime propagation

Layer / File(s)	Summary
Workflow build-details orchestration .github/workflows/build.yaml, .github/workflows/pr.yaml	Adds build-details, connects build and wheel jobs to its output, and expands workflow file exclusions.
Build script datetime inputs ci/build_cpp.sh, ci/build_python.sh, ci/build_wheel.sh	Uses rapids-datetime-string and adds the datetime to wheel versions.
Conda package build strings conda/recipes/*/recipe.yaml	Uses RAPIDS_DATETIME_STRING and datetime_string for package build metadata.

Estimated code review effort: 3 (Moderate) | ~20 minutes

Suggested reviewers: bdice, gforsyth, trxcllnt

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly summarizes the two main changes: unique nightly packages and expanded changed-files exclusions.
Description check	✅ Passed	The description accurately explains nightly package versioning changes and changed-files updates in the pull request.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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_{Comment @coderabbitai help to get the list of available commands.}

[jameslamb]

/merge