Add a test case for ES8 (#27248)

Update docker/setup-qemu-action action to v3 (#27124)

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Update docker/setup-buildx-action action to v3 (#27123)

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Update docker/metadata-action action to v5 (#27122)

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Update docker/login-action action to v3 (#27121)

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Update docker/build-push-action action to v5 (#27120)

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Bump version to v4.2.0 (#27017)

Fix container build when cache is disabled (#26932)

Change Dockerfile to upgrade packages when building (#26922)

Update actions/checkout action to v4 (#26882)

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Update docker.elastic.co/elasticsearch/elasticsearch Docker tag to v7.17.13 (#26879)

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Add search tests (#26703)

Fix comment in build image workflow (#26740)

Fix nightly build version (#26676)

Change the pre-release versioning scheme and associated environment variables (#26653)

Change nightlies versioning from `v4.2.0+2023-08-23` to `v4.2.0-nightly.2023-08-23` (#26626)

Fix `lint:json` not processing `json5` extension (#26481)

Improve Renovate configuration (#26306)

Add end-to-end (system) tests (#25461)

Coverage for `Auth::OmniauthCallbacks` controller (#26147)