Set `GDS_API_ADAPTERS_PACT_VERSION` ENV before running Pact tests
Set `GDS_API_ADAPTERS_PACT_VERSION` ENV before running Pact tests

`pact:verify:branch` was removed from Frontend in https://github.com/alphagov/frontend/pull/2712.

We can achieve the same behaviour by setting the ENV variable
as expected in Frontend here: https://github.com/alphagov/frontend/commit/69be7785c3283920d8392590e98e8118fc543118

alphagov/gds-api-adapters