Fix final so that new clang does not complain

Author: ktf

DataFormats/Detectors/FOCAL/include/DataFormatsFOCAL/ErrorHandling.h

@@ -16,7 +16,7 @@
 
 namespace o2::focal
 {
-class IndexExceptionEvent : public std::exception
+class IndexExceptionEvent final : public std::exception
 {
  public:
   enum class IndexType_t {

Detectors/EMCAL/calib/include/EMCALCalib/CalibContainerErrors.h

@@ -26,7 +26,7 @@ namespace emcal
 /// \ingroup EMCALCalib
 /// \author Markus Fasel <markus.fasel@cern.ch>, Oak Ridge National Laboratory
 /// \since Sept 15, 2022
-class CalibContainerIndexException : public std::exception
+class CalibContainerIndexException final : public std::exception
 {
  public:
   /// \brief Constructor

Detectors/FOCAL/calibration/include/FOCALCalibration/PadPedestalCalibDevice.h

@@ -26,7 +26,7 @@
 namespace o2::focal
 {
 
-class PadPedestalCalibDevice : public framework::Task
+class PadPedestalCalibDevice final : public framework::Task
 {
  public:
   enum Method_t {