CI: increasing timeout for phy-sim tests to 30 minutes

Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>

ci-scripts/Jenkinsfile-gitlab

@@ -313,7 +313,7 @@ pipeline {
                 stage ("Test physical simulators") {
                     steps {
                         gitlabCommitStatus(name: "Test phy-sim") {
-                            timeout (time: 20, unit: 'MINUTES') {
+                            timeout (time: 30, unit: 'MINUTES') {
                                 sh "./ci-scripts/runTestOnVM.sh --workspace $WORKSPACE --variant phy-sim --job-name ${JOB_NAME} --build-id ${BUILD_ID}"
                             }
                         }