Fix build for GHC 9.4 and enable GitHub Actions CI

[thomasjm]

This PR builds on the great work by @peterbecich in #97 to update kubernetes-client so that it builds on the latest versions of GHC (up to and including 9.4.5).

It also enables GitHub Actions, which is passing cleanly now as you can see here. I think there's a spurious failure with 8.10.7; it works locally.

This version includes both attoparsec and megaparsec as dependencies, because jsonpath switched from the former to the latter in version 0.3.0.0. We could lose a dependency by removing attoparsec and dropping support for older jsonpath, but I think it's not a big deal since a) it's a fairly small dependency, b) it will be conditionally imported with CPP, so should not affect any final build products using this library, and c) it's nice to see all the green checkmarks in Github Actions CI for the different Stackage versions. But I don't feel too strongly about it.

CC @akshaymankar and @jonschoning

[k8s-ci-robot]

Hi @thomasjm. Thanks for your PR.

I'm waiting for a kubernetes-client member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[jonschoning]

/lgtm

[jonschoning]

/ok-to-test
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: jonschoning, thomasjm

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[k8s-ci-robot]

@thomasjm: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
kubernetes-clients-haskell-unit-tests	8990d26	link	false	/test kubernetes-clients-haskell-unit-tests

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository. I understand the commands that are listed here.