Log message:
proj-data: Update to 1.24

Upstream NEWS content:

* Czech S-JTSK / Krovak East North to S-JTSK/05 / Modified Krovak East North \ 
transformation
* Norwegian vertical transformation from NN54 to NN2000 height
* French RGM23 to IGN 2023 Mayotte height transformation

Log message:
geography/proj-data: Update to 1.23

Upstream NEWS content:

The PROJ-data release comes with the following additions:

* Slovenian height conversion grid, SVS2000 to SVS2010
* Norwegian ETRS89 transformation grid covering Svalbard

Log message:
geography/proj-data: Update to 1.22

This is more or less a micro release, in that it adds some files and
doesn't really change anything that was there before.  It is a leaf
package.

Upstream changes:

* Dutch grids for height conversions
* The Japanese JPGEO2024 geoid
* Latvian transformation grid for the LKS-2020 reference frame
* Transformation grid for EVRF2019 in Denmark

Log message:
geography/proj-data: Explain upstream tag/tarball mismatch

This is a note to future self.

Log message:
geography/proj-data: Update to 1.21

This is tagged as 1.21.0 but the tarballs are 1.21, so I'm calling it
1.21.  See
  https://github.com/OSGeo/PROJ-data/releases/tag/1.21.0
Generally there are not micros, and any micro would be 1.21.1
so 1.21 vs 1.21.0 won't matter anyway.

Upstream NEWS:

    Grid file for PD/83 to ETRS89 in Thüringen, Germany added (#128)
    Hungarian grids added (#127)

Log message:
geography/proj-data: Update to 1.20

Upstream changes are more data files and bug fixes.
(The distribution lacks NEWS.)

Log message:
geography/proj-data: Update to 1.19

Upstream changes:

Add 2 data files.

Log message:
geography/proj-data: Update to 1.18

Upstream changes are more data files and bug fixes.  A notable
improvement is NADCON5 data files for transforms among NAD27 and the
various NAD83 realizations.  (The distribution lacks NEWS.)