geography/qgis: Update to 3.16.13

This micro happened because of a significant bug in the Windows
packaging of qgis, even though the Windows packagingbits in question
are outside the qgis release tarball, to reduce conufsion among
Windows users.  On other than Windows, this release is equivalenet to
3.16.12.  It's updated in pkgsrc to avoid the perception that it needs
to be updated.

Upstream changes:
  - The version number (and associated hash) has changed.
  - There are NEWS entries aout what will be in 3.16.14

(gdt)