Update actions/checkout action to v4 (#26882)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

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

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

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)

Improve the bug report templates (#25621)

Fixes to the new Image build actions (#26056)

Add a Github Action to send translations to Crowdin for each merge in main (#25869)

Rework the container image build actions (#26007)

Increase PR Rebase job retries (#25926)

Try to improve Renovatebot config (#26005)

Remove some recently-updated packages from Renovabot ignore config (#25960)

Fix incorrect syntax in Github action configuration (#25918)

Run the rebase conflict checker once an hour (#25914)