Update GeoTools 28.6

[jodygarnett]

I have released an unsupported version of GeoTools 28.6 that contains the patch for CVE-2024-36404.

This is not intended to be a functional change, only to prevent security scans for being upset.

Checklist

• I have read the contribution guidelines
• Pull request provided for main branch, backports managed with label
• Good housekeeping of code, cleaning up comments, tests, and documentation
• Clean commit history broken into understandable chucks, avoiding big commits with hundreds of files, cautious of reformatting and whitespace changes
• Clean commit messages, longer verbose messages are encouraged
• API Changes are identified in commit messages
• Testing provided for features or enhancements using automatic tests
• User documentation provided for new features or enhancements in manual
• Build documentation provided for development instructions in README.md files
• Library management using pom.xml dependency management. Update build documentation with intended library use and library tutorials or documentation

[juanluisrp]

@jodygarnett the dependency is not compatible with Java 8 that is what GN 4.2.x uses:

core-geonetwork/core/src/main/java/org/fao/geonet/util/XslUtil.java:[83,33] cannot access org.geotools.geojson.geom.GeometryJSON
  bad class file: /Users/juanl/.m2/repository/org/geotools/gt-geojson/31.5/gt-geojson-31.5.jar(org/geotools/geojson/geom/GeometryJSON.class)
    class file has wrong version 55.0, should be 52.0
    Please remove or make sure it appears in the correct subdirectory of the classpath.

gt-geojson-31.5.jar is compiled for Java 11. Last Geotools version compatible with Java 8 is 28.x so the most recent we can use is 28.5.

[jodygarnett]

Thanks @juanluisrp I have released GeoTools 28.6 so we have something to update the stable branch to.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[juanluisrp]

Tests are passing now. Merging it.