build: update HikariCP to 4.0.3

Changelog: https://github.com/brettwooldridge/HikariCP/blob/HikariCP-4.0.3/CHANGES

Update to 5.x version requires JDK11 (#1158)

Part of #1509

Author: php-coder

pom.xml

@@ -589,7 +589,7 @@
 		<hibernate-validator.version>6.0.22.Final</hibernate-validator.version>
 
 		<!-- Redefine default value from spring-boot-dependencies -->
-		<hikaricp.version>3.4.5</hikaricp.version>
+		<hikaricp.version>4.0.3</hikaricp.version>
 
 		<!-- Redefine default value from spring-boot-dependencies -->
 		<htmlunit.version>2.46.0</htmlunit.version>