azure: ignore PRs which should be skipped for ci
azure: ignore PRs which should be skipped for ci

azure doesn't support [skip ci], so do nothing, rather than failing when
we detect a PR which should have [skip ci], but didn't get skipped.

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