bump 2.3.0 for humble release

Author: SteveMacenski

openvdb_vendor/package.xml

@@ -4,7 +4,7 @@
   schematypens="http://www.w3.org/2001/XMLSchema"?>
 <package format="2">
   <name>openvdb_vendor</name>
-  <version>2.2.0</version>
+  <version>2.3.0</version>
   <description>
     Wrapper around OpenVDB, if not found on the system, will compile from source
   </description>

spatio_temporal_voxel_layer/package.xml

@@ -2,7 +2,7 @@
 <?xml-model href="http://download.ros.org/schema/package_format3.xsd" schematypens="http://www.w3.org/2001/XMLSchema"?>
 <package format ="3">
   <name>spatio_temporal_voxel_layer</name>
-  <version>2.2.0</version>
+  <version>2.3.0</version>
   <description>The spatio-temporal 3D obstacle costmap package</description>
 
   <maintainer email="stevenmacenski@gmail.com">Steve Macenski</maintainer>