tests: Require ninja 1.9 on CI
tests: Require ninja 1.9 on CI

Also, print messages when we have to enable the timestamp resolution
workaround.

becm/meson,QuLogic/meson,jpakkane/meson,QuLogic/meson,jpakkane/meson,pexip/meson,jpakkane/meson,mesonbuild/meson,pexip/meson,mesonbuild/meson,pexip/meson,pexip/meson,becm/meson,QuLogic/meson,becm/meson,jpakkane/meson,jpakkane/meson,becm/meson,jpakkane/meson,becm/meson,mesonbuild/meson,QuLogic/meson,pexip/meson,mesonbuild/meson,QuLogic/meson,jpakkane/meson,QuLogic/meson,pexip/meson,mesonbuild/meson,mesonbuild/meson,becm/meson,QuLogic/meson,mesonbuild/meson,becm/meson,mesonbuild/meson,jpakkane/meson,pexip/meson,pexip/meson,QuLogic/meson,becm/meson,mesonbuild/meson,jpakkane/meson,becm/meson,pexip/meson,becm/meson,mesonbuild/meson,pexip/meson,QuLogic/meson