ENH: Bump for ITK v5.3 release

Author: tbirdso

.github/workflows/build-test-cxx.yml

@@ -15,7 +15,7 @@ on:
       itk-git-tag:
         required: false
         type: string
-        default: 'abf5fa10522a36bc51f42f20f426a622f42ed90d'
+        default: 'v5.3.0'
 
 jobs:
   build-test-cxx:

.github/workflows/build-test-package-python.yml

@@ -10,7 +10,7 @@ on:
       itk-wheel-tag:
         required: false
         type: string
-        default: 'v5.3rc04.post4'
+        default: 'v5.3.0'
     secrets:
       pypi_password:
         required: false  # Packages will not be uploaded to PyPI if not set