GH-47259: [Dev] Use "issue type" not "issue label" for issue type

[kou]

Rationale for this change

GitHub introduced the "issue type" feature for issue type:

• https://docs.github.com/en/issues/tracking-your-work-with-issues/configuring-issues/managing-issue-types-in-an-organization
• https://github.blog/changelog/2025-01-13-evolving-github-issues-public-preview/

Let's use it not custom "issue label"s such as "Type: bug" and "Type: enhancement" for issue type.

What changes are included in this PR?

Use type: instead of labels: in issue templates.

Are these changes tested?

Yes.

Are there any user-facing changes?

No.

• GitHub Issue: [Dev] How about using issue type instead of "Type: XXX" issue label? #47259

[github-actions]

⚠️ GitHub issue #47259 has been automatically assigned in GitHub to PR creator.

[raulcd]

I think this will break our current changelog generation, as we rely on the label Type::

arrow/dev/archery/archery/release/core.py

Lines 460 to 473 in 7360515

	issue_types = {
	'Bug': 'Bug Fixes',
	'Improvement': 'New Features and Improvements',
	'New Feature': 'New Features and Improvements',
	'Sub-task': 'New Features and Improvements',
	'Task': 'New Features and Improvements',
	'Test': 'Bug Fixes',
	'Wish': 'New Features and Improvements',
	'Type: bug': 'Bug Fixes',
	'Type: enhancement': 'New Features and Improvements',
	'Type: task': 'New Features and Improvements',
	'Type: test': 'Bug Fixes',
	'Type: usage': 'New Features and Improvements',
	}

We should also change this probably:

arrow/dev/archery/archery/release/core.py

Lines 71 to 83 in 7360515

	def from_github(cls, github_issue):
	return cls(
	key=github_issue.number,
	type=next(
	iter(
	[
	label.name for label in github_issue.labels
	if label.name.startswith("Type:")
	]
	), None),
	summary=github_issue.title,
	github_issue=github_issue
	)

[kou]

Oh, sorry. I missed it.

It seems that PyGithub doesn't support issue type yet:

• Missing optional type field in Issue object PyGithub/PyGithub#3321
• Add attribute type (IssueType) to Issue PyGithub/PyGithub#3322

[raulcd]

I saw @EnricoMi is a maintainer on PyGithub maybe he can help get a release soon as this was merged some days ago :)

[EnricoMi]

Give me a few more days.

[github-actions]

Thank you for your contribution. Unfortunately, this pull request has been marked as stale because it has had no activity in the past 365 days. Please remove the stale label or comment below, or this PR will be closed in 14 days. Feel free to re-open this if it has been closed in error. If you do not have repository permissions to reopen the PR, please tag a maintainer.

[EnricoMi]

This has been released on Sep 2, 2025. Use the latest version of PyGithub to get this fix..

[kou]

Thanks!