Disable whole CiteSeer since it does not work as of 2024-05-20

[koppor]

Mandatory checks

• Change in CHANGELOG.md described in a way that is understandable for the average user (if applicable)
• Tests created for changes (if applicable)
• Manually tested changed features in running JabRef (always required)
• Screenshots added in PR description (for UI changes)
• Checked developer's documentation: Is the information available and up to date? If not, I outlined it in this pull request.
• Checked documentation: Is the information available and up to date? If not, I created an issue at https://github.com/JabRef/user-documentation/issues or, even better, I submitted a pull request to the documentation repository.

[koppor]

There is only one fetcher tests shown failing. Trying to get this fixed (so that all failing tests are shown)

[koppor]

This PR is marked as draft to investigate why only one failing fetcher test is displayed. There should be more fails.

Maybe refs #9797 and #11300

[koppor]

Before:

440 tests completed, 1 failed, 114 skipped
FAILURE: Executed 440 tests in 5m 50s (1 failed, 114 skipped)

After disablement of maxParallelForks

440 tests completed, 1 failed, 114 skipped

main:

440 tests completed, 2 failed, 114 skipped

Thus, no change.

[koppor]

Now, the hickups of the tests is finished:

SUCCESS: Executed 440 tests in 6m 6s (114 skipped)

[koppor]

Locally, I do have issues though:

[koppor]

I will try to investigate gradle's behavior in #11282

Thus, this is good to go.

[github-actions]

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