fix(deps): update testcontainers-java monorepo to v1.21.4

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
org.testcontainers:spock (source)	1.21.3 → 1.21.4
org.testcontainers:testcontainers (source)	1.21.3 → 1.21.4

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Release Notes

testcontainers/testcontainers-java (org.testcontainers:spock)

v1.21.4

Compare Source

This release makes version 1.21.x works with recent Docker Engine changes.

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Configuration

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

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about these updates again.

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• If you want to rebase/retry this PR, check this box

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[renovate]

⚠️ Artifact update problem

Renovate failed to update artifacts related to this branch. You probably do not want to merge this PR as-is.

♻ Renovate will retry this branch, including artifacts, only when one of the following happens:

• any of the package files in this branch needs updating, or
• the branch becomes conflicted, or
• you click the rebase/retry checkbox if found above, or
• you rename this PR's title to start with "rebase!" to trigger it manually

The artifact failure details are included below:

File name: gradle/libs.versions.toml

Post-upgrade command './gradlew --write-verification-metadata pgp,sha256 --export-keys help' has not been added to the allowed list in allowedCommands

File name: gradle/libs.versions.toml

Post-upgrade command './gradlew --write-verification-metadata pgp,sha256 --export-keys help' has not been added to the allowed list in allowedCommands