chore: bump actions/checkout to v6 and actions/cache to v5

[Copilot]

Updates stale GitHub Actions versions across all three workflow files (build.yml, deploy.yml, release.yml).

Changes

• actions/checkout: v4 → v6
• actions/cache: v4 → v5

actions/setup-java@v4 and softprops/action-gh-release@v2 are already at latest — no change.

Original prompt

Update all uses: references in GitHub Actions workflow files to the latest major versions.

Files to update

.github/workflows/build.yml

• actions/checkout@v4 → actions/checkout@v6
• actions/cache@v4 → actions/cache@v5
• actions/setup-java@v4 → already latest (v4), no change needed

.github/workflows/deploy.yml

• actions/checkout@v4 → actions/checkout@v6
• actions/cache@v4 → actions/cache@v5
• actions/setup-java@v4 → already latest (v4), no change needed

.github/workflows/release.yml

• actions/checkout@v4 → actions/checkout@v6
• actions/cache@v4 → actions/cache@v5
• actions/setup-java@v4 → already latest (v4), no change needed
• softprops/action-gh-release@v2 → already latest (v2), no change needed

Summary of changes

Action	Current	Latest
actions/checkout	v4	v6
actions/setup-java	v4	v4 ✅ (no change)
actions/cache	v4	v5
softprops/action-gh-release	v2	v2 ✅ (no change)

Only actions/checkout (v4→v6) and actions/cache (v4→v5) need to be updated across all three workflow files. Do NOT change anything else in the files — only update these version tags.

The following is the prior conversation context from the user's chat exploration (may be truncated):

User: для всех uses проверь и установи последние версии и оформи PR

Assistant:

Let me first examine the workflow files in the .github/workflows directory to understand what's there.

Assistant: Теперь я вижу все uses в трёх workflow файлах. Давайте проверим последние версии каждого действия:

1. actions/checkout@v4
2. actions/setup-java@v4
3. actions/cache@v4
4. softprops/action-gh-release@v2

Assistant: Теперь у меня есть полная картина. Вот что нужно обновить:

Action	Текущая версия	Последняя версия
actions/checkout	v4	v6
actions/setup-java	v4	v4 (актуальна)
actions/cache	v4	v5
softprops/action-gh-release	v2	v2 (актуальна)

Создаю PR с обновлениями:

Assistant: I'm waiting for your confirmation to proceed with creating the pull request that updates GitHub Actions dependencies to the latest versions.

User: @copilot Accepted Confirmation: Confirm agent session

Assistant: I've started the coding agent to create a PR in OpenIdentityPlatform/commons that updates the GitHub Actions dependencies across all three workflow files. Here's a summary of the changes being made:

Action	Current Version	Latest Version	Files Affected
actions/checkout	v4	v6	build.yml, deploy.yml, release.yml
actions/cache	v4	v5	build.yml, deploy.yml, release.yml
actions/setup-java	v4	v4 ✅ no change	—
softprops/action-gh-release	v2	v2 ✅ no change	—

The coding agent is now working on creating the branch, making the changes, and opening the pull request. You'll receive a notification when the PR is ready for review.

This pull request was created from Copilot chat.