update gitlab ci remove 3.11

4 jobs for add-py-matrix in 11 minutes and 6 seconds (queued for 2 seconds)
Status Name Job ID Coverage
  Build
passed build:linux: [3.10] #5849

00:02:39

25.0%
passed build:linux: [3.7] #5846

00:02:59

25.0%
passed build:linux: [3.8] #5847

00:02:44

25.0%
passed build:linux: [3.9] #5848

00:02:42

25.0%