No code changes needed for GHC 9.6.

This example wasn't ported to the new API.

Now it is, with some ugly `show`s still.

Added `issueStateReason` to `Issue`.

New data structures and endpoints to access the GitHub Actions API.

Commit squashed from the following commits:

* Implement actions->artifacts API.
* Up
* Cleanup
* Actions - cache.
* Actions - artifacts and cache.
* Secrets
* Workflows.
* WorkflowJobs.
* WorkflowRuns.
* Format
* Artifacts QA.
* Cache QA.
* Secrets QA.
* WorkflowJobs QA.
* Workflows QA.
* Format.
* Drop slack-related files.
* Format JSON
* Support workflow name in workflowRunsForWorkflowR.
* Support workflow name in Workflows.hs.
* Fix
* Fix
* Do not parse pull requests from workflow runs.
* Avoid parsing 'trigerring_actor', it is sometimes missing.
* Fix workflow run conclusion parsing.
* Whitespace and lexical changes only
* Remove outdated maintainer from module headers
* Whitespace: align code
* Bump cabal-version to 2.4 for globbing
* Cosmetics: use (<&>)
* Restore upper bounds for openssl etc. in .cabal file
* Whitespace
* Add haddocks for WithTotalCount
* Changelog for PR #459

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Co-authored-by: Andreas Abel <andreas.abel@ifi.lmu.de>