Refs #28024 -- Optimized GEOSCoordSeq.__getitem__() by avoiding superfluous index and dimension checks.

The format changed in 22bfc451.

Follow up to 054a44d6.

Thanks Markus Holtermann and Tim Graham for reviews.

Regression in 1bc249c2.

Reverted 658f1e81 which broke code using __icontains's implicit cast to ::text
on ArrayField.

Thanks Peter J. Farrell for the report.

Refs #26605 -- Added migrations state test for a swappable model inheriting an abstract model inheriting concrete model.

Thanks Sébastien Diemer for the report and test.

Thanks Marc Tamlyn for the report and Tim Graham for the review.

It's always provided.

Fixed #27777 -- Made File.open() work with the with statement

Thanks Shai Berger and Tim Graham for the reviews.

Follow up to a0d16630.

Forward port of 5da14b25 from 1.11.x

This is a security fix.

This is a security fix.