Update HikariCP to 4.0.3 (#2766)

See brettwooldridge/HikariCP#1746 (comment)

We can't update to `5.0.x` as it's not compiled for Java8

Co-authored-by: Juliano Alves <von.juliano@gmail.com>

build.sbt

@@ -690,7 +690,7 @@ commands += Command.command("checkUnformattedFiles") { st =>
 
 lazy val jdbcTestingLibraries = Seq(
   libraryDependencies ++= Seq(
-    "com.zaxxer"              % "HikariCP"                % "3.4.5",
+    "com.zaxxer"              % "HikariCP"                % "4.0.3" exclude ("org.slf4j", "*"),
     "mysql"                   % "mysql-connector-java"    % "8.0.33"     % Test,
     "com.h2database"          % "h2"                      % "2.1.212"    % Test,
     "org.postgresql"          % "postgresql"              % "42.6.0"     % Test,