Update actions/checkout action to v4

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
actions/checkout	action	major	v3 -> v4

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Release Notes

actions/checkout (actions/checkout)

v4

Compare Source

• Support fetching without the --progress option
• Update to node20

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Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

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This PR has been generated by Mend Renovate. View repository job log here.

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PR-Codex overview

This PR updates the GitHub Actions checkout and setup-java versions in multiple workflows.

Detailed summary

• Updated actions/checkout from v3 to v4 in .github/workflows/pdd.yml, .github/workflows/xcop.yml, .github/workflows/mvn.yml, and .github/workflows/codecov.yml.
• Updated actions/setup-java from v3 to v4 in .github/workflows/mvn.yml and .github/workflows/codecov.yml.
• The Java version is set to a range between 11 and 17 in .github/workflows/mvn.yml.

✨ Ask PR-Codex anything about this PR by commenting with /codex {your question}

[yegor256]

@rultor please, try to merge, since 8 checks have passed

[rultor]

@rultor please, try to merge, since 8 checks have passed

@yegor256 OK, I'll try to merge now. You can check the progress of the merge here

[rultor]

@rultor please, try to merge, since 8 checks have passed

@yegor256 Done! FYI, the full log is here (took me 3min)