Bump org.projectnessie.cel:cel-bom from 0.3.21 to 0.4.3 (#732)

planetiler-custommap/pom.xml

@@ -45,7 +45,7 @@
       <dependency>
         <groupId>org.projectnessie.cel</groupId>
         <artifactId>cel-bom</artifactId>
-        <version>0.3.21</version>
+        <version>0.4.3</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>