Upgrade PostgreSQL driver from 42.7.3 to 42.7.5

Author: sikeoka

geowebcache/pom.xml

@@ -69,7 +69,7 @@
     <log4j.version>2.24.3</log4j.version>
     <h2.version>1.1.119</h2.version>
     <hsql.version>2.7.1</hsql.version>
-    <postgresql.version>42.7.3</postgresql.version>
+    <postgresql.version>42.7.5</postgresql.version>
     <oracle.version></oracle.version>
     <java.awt.headless>true</java.awt.headless>
     <jalopy.phase>disabled</jalopy.phase>