[FEATURE] Upgrade to Node 22

[jeff-horton-ho-sas]

What is the feature or enhancement you are suggesting? Upgrade the build to use node 22 when it moves into LTS support in October 2024

What would be the benefit of doing this? Keeps tech stack up to date

Please confirm the below

• [X] I have checked through the issues on the repository and this has not already been suggested

[jeff-horton-ho-sas]

https://github.com/UKHomeOffice/engineering-guidance-and-standards/pull/414 can be re-opened when we're ready to upgrade