eli-375 bugfix - casing on github variables and adding permissions for github actions#311

eddalmond1 merged 2 commits intomainNHSDigital/eligibility-signposting-api:mainfrom

bugfix/eja-github-secrets-uppercaseNHSDigital/eligibility-signposting-api:bugfix/eja-github-secrets-uppercaseCopy head branch name to clipboard