Remove dependency on java.sql (Module java.sql)

[kwin]

Although java.sql is by default contained in all JREs it is not part of the java.base module. To allow leveraging ACTool with a trimmed down JRE not containing this module the dependency should be removed. It is currently used in a single place in

accesscontroltool/accesscontroltool-bundle/src/main/java/biz/netcentric/cq/tools/actool/api/HistoryEntry.java

Line 27 in e2e479c

private Timestamp timestamp;

. Unfortunately this is part of the API, so a replacement is not backwards compatible.

[kwin]

A suitable replacement is https://docs.oracle.com/javase/8/docs/api/java/time/package-summary.html (available since Java8) which also allows to store fractional seconds (e.g. exposed via https://docs.oracle.com/javase/8/docs/api/java/time/OffsetDateTime.html#getNano--)