All deployment options
- [Deploy build 2945 of `security-hq` to CODE](https://riffraff.gutools.co.uk/deployment/deployAgain?project=security-hq&build=2945&stage=CODE&updateStrategy=MostlyHarmless&action=deploy)
- [Deploy parts of build 2945 to CODE by previewing it first](https://riffraff.gutools.co.uk/preview/yaml?project=security-hq&build=2945&stage=CODE&updateStrategy=MostlyHarmless)
- [What's on CODE right now?](https://riffraff.gutools.co.uk/deployment/history?projectName=security-hq&stage=CODE)
What does this change?
Updates the version of GuCDK, with an aim to improve deployment stability.
See also https://github.com/guardian/cdk/releases/tag/v59.5.1.