meson CI: add verbose flag

Now that newer meson is used, verbose can be added as elsewhere.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

.github/workflows/on_PR_meson.yaml

@@ -142,8 +142,8 @@ jobs:
       - name: Compile and Test
         run: |
           meson setup "${{github.workspace}}/build" -Dauto_features=${{matrix.deps}} -Dwarning_level=3 -Dnls=disabled
-          meson compile -C "${{github.workspace}}/build"
+          meson compile -C "${{github.workspace}}/build" --verbose
-          meson test -C "${{github.workspace}}/build"
+          meson test -C "${{github.workspace}}/build" --verbose
   FreeBSD:
     runs-on: ubuntu-latest
     steps: