[JENKINS-36720]: Fixed some Spotbugs issues (#4180)

* [JENKINS-36720]: Fixed Spotbugs issues WMI_WRONG_MAP_ITERATOR and OS_OPEN_STREAM in core

* merged try with resources with try finally

* reverted auto format from IDE

* reverted auto format from IDE

* use Util.fileToPath() as suggested to remove catch block

* merged try statements

* merged try statements

* reverted some whitespace fixes

* reverted another whitespace fix

* Apply suggestions from code review

Co-Authored-By: Oleg Nenashev <o.v.nenashev@gmail.com>

* reverted change

* reverted change

* reverted change

Co-authored-by: Oleg Nenashev <o.v.nenashev@gmail.com>