* fix: taosbenchmark sub on 2.6 for main

* fix: upgrade taospy to 2.7.6 and fix unstable test case

fix: error in last cache handle deleted data

fix: invalid topic query

enh: optimize snapshot transfer

* ci:Specify the version of the python connector

* ci:Specify the version of the python connector

* ci:Specify the version of the python connector

* ci:Specify the version of the python connector

* ci:Specify the version of the python connector

* ci:Specify the version of the windows  python connector

* ci:Specify the version of the python connector

* ci:Specify the version of the python connector

add user err code

enh: optimize last/last_row cost when the cache was first loaded

fix:add log

enh: add user err code

enh: optimize last/last_row cost when the cache was first loaded

fix: TIMETRUNCATE with 1d return unexpected result

fix:get dest table version

fix:[TS-2828] retry if ver is old

feat: alter stt trigger and min rows

* fix: taosbenchmark socket close properly for main

* fix: update taos-tools 41d4f95

fix:add error log

fix:fill history check update