feat(.github/actions): add get-release-issue-v1 action

[Zidious]

This PR adds a new GHA for getting a issue URL for a given repo and version number.

• The input version is required and is likely going to be part of a composite action to grab the version from package.json (for example) and passed to this action
• The input owner-and-repo can be overridden to something like dequelabs/my-repo but defaults to current repo
• Added tests accordingly

Internal-testing:

Given a single issue: https://github.com/dequelabs/zidious-testing/actions/runs/7090495379/job/19297573314
Given multiple issues and repos: https://github.com/dequelabs/zidious-testing/actions/runs/7090546614/job/19297744680
Given the issue doesn't exist: https://github.com/dequelabs/zidious-testing/actions/runs/7090586377/job/19297887126
Given an unknown owner-and-repo input: https://github.com/dequelabs/zidious-testing/actions/runs/7090579202/job/19297860895

Ref: #64 (comment)
Closes: #82

[Zidious]

Test workflows -

When the issue doesn't exist: https://github.com/dequelabs/zidious-testing/actions/runs/7119956090/job/19386169053
When the issue exists: https://github.com/dequelabs/zidious-testing/actions/runs/7119986925/job/19386264587
When more than one issue exists: https://github.com/dequelabs/zidious-testing/actions/runs/7120000178/job/19386309758
When the repo doesn't exist: https://github.com/dequelabs/zidious-testing/actions/runs/7120009436/job/19386342018

Resolved

[straker]

Nice. This looks a lot better and a lot simpler.

One final test to add is the test of the top-level try/catch.

Resolved

[straker]

Just a small nit in a test description

Resolved