Specify Django storages according to newer requirements

The old format was depreciated with Django 4.2.

django/projects/mysite/settings_base.py

@@ -383,17 +383,24 @@
     },
 }
 
-# We use django-pipeline to compress and reference JavaScript and CSS files. To
-# make Pipeline integrate with staticfiles (and therefore collecstatic calls)
-# the STATICFILES_STORAGE variable has to be set to:
-STATICFILES_STORAGE = 'pipeline.storage.PipelineManifestStorage'
-
 # Adding PipelineFinder as asset discovery mechanism allows staticfiles to also
 # discover files that were generated by Pipeline.
 STATICFILES_FINDERS = (
     'django.contrib.staticfiles.finders.AppDirectoriesFinder',
 )
 
+STORAGES = {
+    'default': {
+        'BACKEND': 'django.core.files.storage.FileSystemStorage'
+    },
+    'staticfiles': {
+        # We use django-pipeline to compress and reference JavaScript and CSS files. To
+        # make Pipeline integrate with staticfiles (and therefore collecstatic calls)
+        # the STATICFILES_STORAGE variable has to be set to:
+        'BACKEND': 'pipeline.storage.PipelineManifestStorage',
+    },
+}
+
 PIPELINE = {
     # Use CSSMin as django-pipeline's CSS compressor
     'CSS_COMPRESSOR': 'pipeline.compressors.cssmin.CSSMinCompressor',