v4.20.0

Merge branch 'release'

v4.19.0

Merge branch 'release'

v4.18.0

Merge pull request #580 from NHSDigital/release

v4.18.0 release changes

v4.17.0

Merge pull request #562 from NHSDigital/release

Release v4.17.0

v4.16.0

CCM-4070: Fix zap pipeline
CCM-3976: Create mock endpoint for nhs proxy
CCM-2771: Postman collection update for free text communications
CCM-3898: Increase test coverage
CCM-4111: bump black package
CCM-4113: bump coverage package

v4.15.0

Merge pull request #516 from NHSDigital/release

CCM-4421: RELEASE: Release v4.15.0

v4.14.1

+patch

v4.14.0

Merge branch 'release'

v4.13.1

+patch

v4.12.1

+patch