When EMAIL_USE_LOCALTIME=True, send emails with a Date header
in the local time zone.

Fixed #26667 -- Fixed a regression in queries on a OneToOneField that has to_field and primary_key=True.

Thanks Simon Charette for review.

Thanks marekw2143 for the initial patch and carljm for support.

Fixed #26638 -- Allowed callable arguments for QuerySet.get_or_create()/update_or_create() defaults.

Fixed #26672 -- Fixed HStoreField to raise ValidationError instead of crashing on non-dict JSON input.

Thanks Cristiano Coelho for the report and Tim Graham for the review.

Complements 47f22e82.

The actual non-ASCII character differs on Windows.

Thanks mmoreaux and DheerendraRathor.

Thanks Ursidours for the report.

File operations always raise a ENOENT error when a file doesn't exist.
Checking the file exists before the operation adds a race condition
condition where the file could be removed between operations. As the
operation already raises an error on a missing file, avoid this race and
avoid checking the file exists twice. Instead only check a file exists
by catching the ENOENT error.

Fixed a failure on Windows.