Update to 26.06

[AyodeAwe]

This PR updates the repository to version 26.06.

This is part of the 26.04 release burndown process.

[coderabbitai]

Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Run ID: c516cb3b-dc99-406f-ae8b-1663833fee67

📥 Commits

Reviewing files that changed from the base of the PR and between 988aafb and c5b0f18.

📒 Files selected for processing (22)

• .devcontainer/cuda12.9-conda/devcontainer.json
• .devcontainer/cuda12.9-pip/devcontainer.json
• .devcontainer/cuda13.1-conda/devcontainer.json
• .devcontainer/cuda13.1-pip/devcontainer.json
• .github/workflows/build.yaml
• .github/workflows/pr.yaml
• .github/workflows/pr_issue_status_automation.yml
• .github/workflows/test.yaml
• .github/workflows/trigger-breaking-change-alert.yaml
• CONTRIBUTING.md
• VERSION
• conda/environments/all_cuda-129_arch-aarch64.yaml
• conda/environments/all_cuda-129_arch-x86_64.yaml
• conda/environments/all_cuda-131_arch-aarch64.yaml
• conda/environments/all_cuda-131_arch-x86_64.yaml
• conda/environments/clang_tidy_cuda-129_arch-x86_64.yaml
• conda/environments/clang_tidy_cuda-131_arch-x86_64.yaml
• conda/environments/cpp_all_cuda-129_arch-x86_64.yaml
• conda/environments/cpp_all_cuda-131_arch-x86_64.yaml
• dependencies.yaml
• python/cuml/pyproject.toml
• python/libcuml/pyproject.toml

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📝 Walkthrough

Summary by CodeRabbit

• Chores
  • Bumped project version to 26.06
  • Updated RAPIDS and associated package dependencies to version 26.6 series across all environments
  • Updated development container images from 26.04 to 26.06, including CUDA 12.9 and 13.1 variants
  • Updated GitHub Actions workflow configurations to latest infrastructure standards
  • Refreshed conda environment specifications for multiple CUDA configurations and architectures

Walkthrough

This PR updates version references across the RAPIDS ecosystem from 26.04/26.4 to 26.06/26.6, affecting devcontainer configurations, GitHub Actions workflows, conda environment specifications, Python project dependencies, and the project version file. The changes coordinate updates to container images, workflow references, and dependency pins across CI/CD and development infrastructure.

Changes

Cohort / File(s)	Summary
Devcontainer configuration .devcontainer/cuda12.9-conda/devcontainer.json, .devcontainer/cuda12.9-pip/devcontainer.json, .devcontainer/cuda13.1-conda/devcontainer.json, .devcontainer/cuda13.1-pip/devcontainer.json	Updated base image tags, run names, and feature versions from 26.04/26.4 to 26.06/26.6 across all four devcontainer configurations (CUDA 12.9 and 13.1 variants, both conda and pip).
GitHub Actions workflows .github/workflows/build.yaml, .github/workflows/pr.yaml, .github/workflows/pr_issue_status_automation.yml, .github/workflows/test.yaml, .github/workflows/trigger-breaking-change-alert.yaml	Switched workflow references from python-3.14 tag to main branch across all workflow definitions; updated container image tags from ci-conda:26.04-latest to ci-conda:26.06-latest in build and lint jobs.
Conda environment files (CUDA 12.9) conda/environments/all_cuda-129_arch-aarch64.yaml, conda/environments/all_cuda-129_arch-x86_64.yaml, conda/environments/clang_tidy_cuda-129_arch-x86_64.yaml, conda/environments/cpp_all_cuda-129_arch-x86_64.yaml	Updated RAPIDS-related package versions from 26.4.\* to 26.6.\* (cudf, cuvs, dask-cuda, dask-cudf, libcuvs, libraft, librmm, pylibraft, raft-dask, rapids-dask-dependency, rapids-xgboost, rmm).
Conda environment files (CUDA 13.1) conda/environments/all_cuda-131_arch-aarch64.yaml, conda/environments/all_cuda-131_arch-x86_64.yaml, conda/environments/clang_tidy_cuda-131_arch-x86_64.yaml, conda/environments/cpp_all_cuda-131_arch-x86_64.yaml	Updated RAPIDS-related package versions from 26.4.\* to 26.6.\* matching CUDA 12.9 counterparts; some files include expanded tooling dependencies (graphviz, hdbscan, ipykernel, ipython, nltk, scipy ecosystem packages).
Python project dependencies python/cuml/pyproject.toml, python/libcuml/pyproject.toml	Updated dependency constraints from 26.4.\* to 26.6.\* across cudf, libcuml, libraft, librmm, pylibraft, rmm, and dask-related packages in project and build-backend requires sections.
Version and metadata VERSION, dependencies.yaml, CONTRIBUTING.md	Bumped VERSION from 26.04.00 to 26.06.00; updated all package version pins in dependencies.yaml from 26.4.\* to 26.6.\*; updated Docker command in CONTRIBUTING.md to use ci-conda:26.06-latest.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~12 minutes

Possibly related PRs

• Add support for Python 3.14 #7831: Modified the same GitHub Actions workflow files' "uses" references, switching workflow tags and updating container image versions in coordinated version bump changes.

Suggested labels

conda, improvement, non-breaking, ci

Suggested reviewers

• jameslamb
• dantegd

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch version-update-26.06

📝 Coding Plan

• Generate coding plan for human review comments

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