[CMake] fix CMP0115

7 jobs for pr/88 in 6 minutes (queued for 1 second)
Status Name Job ID Coverage
  Test
passed doc-coverage #125843

00:01:33

93.0%
passed format #125844

00:00:34

passed robotpkg-dynamic-graph-v3-18.04 #125838

00:01:35

passed robotpkg-dynamic-graph-v3-20.04 #125839

00:03:43

passed robotpkg-dynamic-graph-v3-buster #125840

00:03:26

passed robotpkg-dynamic-graph-v3-ferrum #125841

00:05:10

passed robotpkg-dynamic-graph-v3-stretch #125842

00:05:59