deps: Bump oblt-cli version to 7.42.5

[elastic-vault-github-plugin-prod]

deps: Bump oblt-cli version

deps(oblt-cli): Bump oblt-cli version to 7.42.5

1 file(s) updated with "oblt-cli 7.42.5": * tests/oblt-cli/version/.tool-versions

7.42.5

### Changes

## 🐛 Bug Fixes

- fix: write last\_operation field to cluster config YAML file on update custom @[copilot-swe-agent[bot]](https://github.com/apps/copilot-swe-agent) (#768)

**Full Changelog**: https://github.com/elastic/oblt-cli/compare/7.42.4...7.42.5

For more information, please visit:
  * clusters docs at https://ela.st/oblt-clusters
  * oblt-cli docs at https://ela.st/oblt-cli
  * oblt-robot docs at https://ela.st/oblt-robot
  * Serverless docs at https://ela.st/oblt-serverless

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