Refs #35841 -- Updated GeoIP2 test database files.

The mmdb files were taken from
679e37e18a.

tests/gis_tests/data/geoip2/LICENSE

@@ -1,4 +0,0 @@
-This work is licensed under the Creative Commons Attribution-ShareAlike 3.0
-Unported License. To view a copy of this license, visit
-http://creativecommons.org/licenses/by-sa/3.0/ or send a letter to Creative
-Commons, 444 Castro Street, Suite 900, Mountain View, California, 94041, USA.

tests/gis_tests/data/geoip2/README

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-These test databases are taken from the following repository:
-
-https://github.com/maxmind/MaxMind-DB/

tests/gis_tests/data/geoip2/README.md

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+# GeoIP2 and GeoLite2 Test Databases
+
+The following test databases are provided under [this license][0]:
+
+- `GeoIP2-City-Test.mmdb`
+- `GeoIP2-Country-Test.mmdb`
+- `GeoLite2-ASN-Test.mmdb`
+- `GeoLite2-City-Test.mmdb`
+- `GeoLite2-Country-Test.mmdb`
+
+Updates can be found in [this repository][1].
+
+[0]: https://github.com/maxmind/MaxMind-DB/blob/main/LICENSE-MIT
+[1]: https://github.com/maxmind/MaxMind-DB/tree/main/test-data