Update changelog for 1.8.0 release
Update changelog for 1.8.0 release

outofcoffee/testcontainers-java,rnorth/test-containers,rnorth/test-containers,outofcoffee/testcontainers-java,outofcoffee/testcontainers-java,testcontainers/testcontainers-java,testcontainers/testcontainers-java,testcontainers/testcontainers-java,rnorth/test-containers