update link checker to update existing issues

[lechnerc77]

Purpose

• If broken links are detected and an existing issue exists, the logic now updates the existing one and does not create a new one

Does the PR solve an issue

[ ] Yes - Please add issue number
[X] No

Does this introduce a breaking change?

[ ] Yes
[X] No

Pull Request Type

What kind of change does this Pull Request introduce?

[ ] Bugfix
[X] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Documentation content changes
[ ] Other... Please describe:

How to Test

Execute link checker workflow

What to Check

Verify that the following are valid

If existing issue with broken links exists, the issue will be updated. No new issue will be created

Other Information

n/a

[rui1610]

Nice feature! Thanks @lechnerc77 !!