[2.3.0] Checkmk Werk 16843 created: increase performance of mk-sql for some cases

[//]: # (werk v2) # increase performance of mk-sql for some cases key | value ---------- | --- date | 2024-06-21T09:14:33+00:00 version | 2.3.0p7 class | feature edition | cee component | checks level | 1 compatible | yes Due to parallelization and extensive use of asynchronous processing, the execution time of the plugin decreased by up to 3 times for instances with many databases.