Fixed #31292 -- Fixed django.contrib.gis.gdal.gdal_full_version() crash.

[vdboor]

The ctypes signature uses a 'c_char_p' type. The gdal_version() was updated in 5330cd5 to reflect that, but gdal_full_version() wasn't updated. It currently raises:

ctypes.ArgumentError: argument 1: <class 'TypeError'>: wrong type

[hramezani]

@vdboor Thanks for the patch.
I think it would be good to open a ticket for this and assign it to yourself.
Please Add a test to prove your fix.

[vdboor]

Thanks, reading the contributing guide I wondered whether that was needed for such small fix.
I've created a ticket in trac: https://code.djangoproject.com/ticket/31292

[hramezani]

Thanks for the ticket. the ticket is already accepted.
Please add tests for your patch and assign the ticket to yourself.
When you added the tests, please uncheck the Needs tests flag.

[taylorjohnwood]

I accepted the ticket and will write tests for this patch this week, sorry @vdboor if you have already started I cant tell because no one has accepted the ticket.

[hramezani]

Please fix the isort error and then uncheck the Patch needs improvement on the ticket.

[vdboor]

ok, done!

[felixxm]

@vdboor Thanks 👍 I moved tests to a separate file, pushed minor edits, and moved a new test for gdal_version() to a separate commit.