Backport of "meson: fix warning about configure_file() install kwarg" into 1.16
requested to merge tpm/gstreamer:backport-mr-254-into-1.16-meson-configure-warning-with-older-meson-versions into 1.16
Backport of !254 (merged) "meson: fix warning about configure_file() install kwarg".
Commits:
- d90d771a meson: fix warning about configure_file() install kwarg