Updated jackson-databind to 2.12.2

Dependabot hangs, so let's do that manually

Author: AB-xdev

vaadin-maps-leaflet-flow/pom.xml

@@ -133,7 +133,7 @@
 		<dependency>
 			<groupId>com.fasterxml.jackson.core</groupId>
 			<artifactId>jackson-databind</artifactId>
-			<version>2.11.3</version>
+			<version>2.12.2</version>
 		</dependency>
 
 		<!-- Added to provide logging output as Vaadin uses -->