LCORE-634: bump up Llama Stack version to 0.2.20

[tisnik]

Description

LCORE-634: bump up Llama Stack version to 0.2.20

Type of change

• Refactor
• New feature
• Bug fix
• CVE fix
• Optimization
• Documentation Update
• Configuration Update
• Bump-up service version
• Bump-up dependent library
• Bump-up library or tool used for development (does not change the final image)
• CI configuration change
• Konflux configuration change
• Unit tests improvement
• Integration tests improvement
• End to end tests improvement

Related Tickets & Documents

• Related Issue #LCORE-634

Summary by CodeRabbit

• Chores
  • Updated Llama Stack and client dependencies to 0.2.20.
  • Increased maximal supported Llama Stack version to 0.2.20.
  • No functional or API changes; behavior and error handling unchanged.
  • Users running Llama Stack 0.2.20 should operate seamlessly without configuration changes.

[coderabbitai]

Walkthrough

Bumps llama-stack and llama-stack-client from 0.2.19 to 0.2.20 in pyproject.toml, updates MAXIMAL_SUPPORTED_LLAMA_STACK_VERSION to "0.2.20" in src/constants.py, and adds external_providers_dir: /tmp to tests/configuration/minimal-stack.yaml.

Changes

Cohort / File(s)	Summary
Dependency version bump pyproject.toml	Update llama-stack and llama-stack-client from 0.2.19 to 0.2.20.
Constants alignment src/constants.py	Update MAXIMAL_SUPPORTED_LLAMA_STACK_VERSION from "0.2.19" to "0.2.20".
Test configuration tests/configuration/minimal-stack.yaml	Add external_providers_dir: /tmp entry (inserted after container_image: null).

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related PRs

• LCORE-633: bump-up Llama Stack version to 0.2.19 #520 — Bumped supported llama-stack version and constant in a prior change (0.2.18→0.2.19).
• LCORE-599: bump-up Llama Stack version to 0.2.18 #452 — Similar change pattern: bumping llama-stack/llama-stack-client and updating MAXIMAL_SUPPORTED_LLAMA_STACK_VERSION.
• LCORE-380: bump-up Llama Stack to version 0.2.16 #312 — Dependency version bumps for llama-stack and llama-stack-client in pyproject.toml.

Suggested reviewers

• umago

Poem

I hop the versions up a stair,
From nineteen to a fresh new pair.
A tiny yarn of YAML spun,
Constants matched — the job is done.
Carrot cheers, a rabbit's grin. 🥕🐇

Pre-merge checks and finishing touches

✅ 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 "LCORE-634: bump up Llama Stack version to 0.2.20" accurately and concisely describes the PR's primary change—updating the Llama Stack dependency to 0.2.20—and includes the related ticket ID. It is specific, on-topic, and free of noisy or generic phrasing, which matches the pyproject.toml and src/constants.py updates. A reviewer scanning the history will understand the main intent from this title alone.
Docstring Coverage	✅ Passed	No functions found in the changes. Docstring coverage check skipped.

✨ Finishing touches

🧪 Generate unit tests

• Create PR with unit tests
• Post copyable unit tests in a comment

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📜 Recent review details

Configuration used: CodeRabbit UI

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between a281472 and 0da9ac9.

📒 Files selected for processing (1)

• tests/configuration/minimal-stack.yaml (1 hunks)

✅ Files skipped from review due to trivial changes (1)

• tests/configuration/minimal-stack.yaml

⏰ Context from checks skipped due to timeout of 90000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (2)

• GitHub Check: e2e_tests
• GitHub Check: build-pr

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