Bump container-structure-test version to 1.18.1

[jenkins-infra-updatecli]

Bump container-structure-test version

Update the `container-structure-test` version in the tools-versions.yml file

change detected: * key "$.cst_version" updated from "1.17.0" to "1.18.1", in file "provisioning/tools-versions.yml"

1.18.1

Release published on the 2024-05-03 22:33:15 +0000 UTC at the url https://github.com/GoogleContainerTools/container-structure-test/releases/tag/v1.18.1

## Changelog
* 7efb2e1 chore: update binaries (#441)

## Container Images

`ghcr.io/googlecontainertools/container-structure-test:1.18.1`

Update the `container-structure-test` version in the goss test

change detected: * key "$.command.container-structure-test.stdout[0]" updated from "1.17.0" to "1.18.1", in file "goss/goss-common.yaml"

1.18.1

Release published on the 2024-05-03 22:33:15 +0000 UTC at the url https://github.com/GoogleContainerTools/container-structure-test/releases/tag/v1.18.1

## Changelog
* 7efb2e1 chore: update binaries (#441)

## Container Images

`ghcr.io/googlecontainertools/container-structure-test:1.18.1`

Jenkins pipeline link

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