Test failures with PROJ 9.3.0

[Bas Couwenberg]

The Debian package build fails with PROJ 9.3.0-rc1:

--- testlistgeo_out     2023-08-29 03:55:10.645106504 +0000
+++ testlistgeo_out.dist.tmp    2023-08-29 03:55:10.641106501 +0000
@@ -1822,8 +1822,8 @@
    ProjNatOriginLongGeoKey: 0.000000 (  0d 0' 0.00"E)
    ProjFalseEastingGeoKey: 0.000000 m
    ProjFalseNorthingGeoKey: 0.000000 m
-GCS: 10346/NSIDC Authalic Sphere
-Datum: 1360/NSIDC International 1924 Authalic Sphere
+GCS: 4053/Unspecified datum based upon the International 1924 Authalic Sphere
+Datum: 6053/Not specified (based on International 1924 Authalic Sphere)
 Ellipsoid: 7057/International 1924 Authalic Sphere (6371228.00,6371228.00)
 Prime Meridian: 8901/Greenwich (0.000000/  0d 0' 0.00"E)
 Projection Linear Units: 9001/metre (1.000000m)

PROBLEMS HAVE OCCURRED
test file testlistgeo_out saved

[Bas Couwenberg]

Confirmed fix with the changes from #90.