Update CODEOWNERS (#14110)

* Update CODEOWNERS

Add @fprino to the ITS-related code owners.

Author: mconcas

CODEOWNERS

@@ -34,7 +34,7 @@
 /DataFormats/Detectors/GlobalTracking          @shahor02
 /DataFormats/Detectors/GlobalTrackingWorkflow  @shahor02
 /DataFormats/Detectors/HMPID                   @gvolpe79
-/DataFormats/Detectors/ITSMFT                  @mcoquet642 @mconcas @shahor02
+/DataFormats/Detectors/ITSMFT                  @fprino @mcoquet642 @mconcas @shahor02
 /DataFormats/Detectors/MUON                    @AliceO2Group/muon-experts @shahor02
 /DataFormats/Detectors/PHOS                    @peressounko @kharlov
 /DataFormats/Detectors/Passive                 @sawenzel
@@ -65,7 +65,7 @@
 /Detectors/GlobalTracking          @shahor02
 /Detectors/GlobalTrackingWorkflow  @shahor02
 /Detectors/HMPID                   @gvolpe79
-/Detectors/ITSMFT                  @mcoquet642 @mconcas @shahor02
+/Detectors/ITSMFT                  @fprino @mcoquet642 @mconcas @shahor02
 /Detectors/MUON                    @AliceO2Group/muon-experts @shahor02
 /Detectors/PHOS                    @peressounko @kharlov
 /Detectors/Passive                 @sawenzel