NPA-6501: bump spec version before release#318

ehallam merged 1 commit intomasterNHSDigital/validated-relationships-service-api:masterfrom

task/NPA-6501/spec-version-bump-to-1.18.0NHSDigital/validated-relationships-service-api:task/NPA-6501/spec-version-bump-to-1.18.0Copy head branch name to clipboard