Bumped postgres dependency in JDBC example project

Author: rjrudin

examples/jdbc-project/build.gradle

@@ -9,13 +9,7 @@ repositories {
 
 dependencies {
 	implementation "org.springframework:spring-jdbc:5.3.27"
-
-	/**
-	 * 42.1.4 is the latest version that works.
-	 * Any query using 42.2.0 results in an error of "The server's DateStyle parameter was changed to ISO. The
-	 * JDBC driver requires DateStyle to begin with ISO for correct operation."
-	 */
-	implementation "org.postgresql:postgresql:42.1.4"
+	implementation "org.postgresql:postgresql:42.6.0"
 }
 
 task selectFromSysTables(type: JavaExec) {