message: Bump Ginkgo version to 1.2.0.
diff: cmake_minimum_required(VERSION 3.9)
  -project(Ginkgo LANGUAGES C CXX VERSION 1.1.1 DESCRIPTION "A numerical linear algebra library targeting many-core architectures")
  +project(Ginkgo LANGUAGES C CXX VERSION 1.2.0 DESCRIPTION "A numerical linear algebra library targeting many-core architectures")
  set(Ginkgo_VERSION_TAG "develop")
  set(PROJECT_VERSION_TAG ${Ginkgo_VERSION_TAG})
  