use tuple of exception classes instead of or (#8267)

Co-authored-by: Tyler Pauly <tapastro@gmail.com>
Co-authored-by: Howard Bushouse <bushouse@stsci.edu>

jwst/photom/photom.py

@@ -1235,7 +1235,7 @@ def save_area_info(self, ftab, area_fname):
                         log.info('Values for PIXAR_SR and PIXAR_A2 obtained from AREA reference file.')
 
                 # The area reference file might be older, try the photom reference file
-                except AttributeError or KeyError:
+                except (AttributeError, KeyError):
                     area_ster, area_a2 = self.pixarea_from_ftab(ftab)
 
                 pix_area.close()