Fix Boost dependency

If we use Boost_INCLUDE_DIR instead of Boost_INLUDE_DIRS without adding CONFIG
it wont be defined yet, so we are getting errors on error like this ( with Debug Builds )

CMake Error: The following variables are used in this project, but they are set to NOTFOUND.
Please set them or make sure they are set and tested correctly in the CMake files:
Boost_INCLUDE_DIR
3 jobs for !37 with work/usta_boostfix in 55 minutes and 32 seconds (queued for 273 minutes and 39 seconds)
detached
Status Job ID Name Coverage
  Build
passed #75363
build_clazy_clang_tidy

00:29:07

failed #75381
linux kf5-qt5 qt5.12

00:26:25

1.0%
failed #75362
linux kf5-qt5 qt5.12

01:00:03

1.0%
 
Name Stage Failure
failed
linux kf5-qt5 qt5.12 Build
build: found 6392 matching files and directories   
WARNING: Uploading artifacts as "archive" to coordinator... failed id=75381 responseStatus=502 Bad Gateway status=502 token=BzGxto5J
WARNING: Retrying... context=artifacts-uploader error=invalid argument
WARNING: Uploading artifacts as "archive" to coordinator... failed id=75381 responseStatus=502 Bad Gateway status=502 token=BzGxto5J
WARNING: Retrying... context=artifacts-uploader error=invalid argument
WARNING: Uploading artifacts as "archive" to coordinator... failed id=75381 responseStatus=502 Bad Gateway status=502 token=BzGxto5J
FATAL: invalid argument
Cleaning up file based variables
ERROR: Job failed: exit code 1