Bump geotools.version from 26.3 to 26.4 (#172)

Bumps `geotools.version` from 26.3 to 26.4.

Updates `gt-shapefile` from 26.3 to 26.4

Updates `gt-epsg-hsql` from 26.3 to 26.4

---
updated-dependencies:
- dependency-name: org.geotools:gt-shapefile
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.geotools:gt-epsg-hsql
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

planetiler-core/pom.xml

@@ -16,7 +16,7 @@
   </parent>
 
   <properties>
-    <geotools.version>26.3</geotools.version>
+    <geotools.version>26.4</geotools.version>
     <log4j.version>2.17.2</log4j.version>
     <prometheus.version>0.15.0</prometheus.version>
   </properties>