[sonic-sairedis] Update submodule (sonic-net#7202)

1906fdf [pyext] Update Makefile to disable warning Wconversion for older swig (sonic-net#817)
1dbcaeb Remove gbsyncd_startup.py (sonic-net#813)
0372615 [vslib] Refresh queue pause status (sonic-net#814)
00d883c [sairedis] Add sai_dbg_generate_dump api to redis interface (sonic-net#811)
8585803 [sairedis] Unlock api mutex for communication mode (sonic-net#812)
c69549a [pyext] Add SWIG sairedis python submodule (sonic-net#806)