Bump maven-assembly-plugin in /.github/planetiler-examples-dependabot (#305)

planetiler-examples/standalone.pom.xml

@@ -90,7 +90,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-assembly-plugin</artifactId>
-        <version>3.4.1</version>
+        <version>3.4.2</version>
         <dependencies>
           <dependency>
             <groupId>com.onthegomap.planetiler</groupId>