Replace deprecated `normed` with `density` in numpy.histogram()

The normed keyword argument has been removed from np.histogram, np.histogram2d, and np.histogramdd. Use density instead. If normed was passed by position, density is now used.

Here is the change log:
https://numpy.org/devdocs/release/2.24.1-notes.html#expired-deprecations

components/isceobj/TopsProc/runESD.py

@@ -120,7 +120,7 @@ def runESD(self, debugPlot=True):
     meanval = np.mean(val)
     stdval = np.std(val)
 
-    hist, bins = np.histogram(val, 50, normed=1)
+    hist, bins = np.histogram(val, 50, density=True)
     center = 0.5*(bins[:-1] + bins[1:])
 
 

components/isceobj/TopsProc/runRangeCoreg.py

@@ -152,7 +152,7 @@ def runRangeCoreg(self, debugPlot=True):
     meanval = np.mean(val)
     stdval = np.std(val)
 
-    hist, bins = np.histogram(val, 50, normed=1)
+    hist, bins = np.histogram(val, 50, density=True)
     center = 0.5*(bins[:-1] + bins[1:])
 
 

contrib/stack/topsStack/estimateAzimuthMisreg.py

@@ -141,7 +141,7 @@ def main(iargs=None):
     meanval = np.mean(val)
     stdval = np.std(val)
 
-    hist, bins = np.histogram(val, 50, normed=1)
+    hist, bins = np.histogram(val, 50, density=True)
     center = 0.5*(bins[:-1] + bins[1:])
 
 

contrib/stack/topsStack/estimateRangeMisreg.py

@@ -205,7 +205,7 @@ def main(iargs=None):
     meanval = meanval * referenceTop.bursts[0].rangePixelSize
     stdval = stdval * referenceTop.bursts[0].rangePixelSize
 
-    hist, bins = np.histogram(val, 50, normed=1)
+    hist, bins = np.histogram(val, 50, density=True)
     center = 0.5*(bins[:-1] + bins[1:])
 
     outputDir = os.path.dirname(inps.output)