fix: parse table names with schema prefix

[olavloite]

The SimpleParser that is used for describing (DML) statements did not accept table names with a schema prefix, e.g. public.my_table.

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (postgresql-dialect@1c60253). Click here to learn what that means.
The diff coverage is n/a.

@@                  Coverage Diff                  @@
##             postgresql-dialect     #232   +/-   ##
=====================================================
  Coverage                      ?   81.06%           
  Complexity                    ?     1116           
=====================================================
  Files                         ?       94           
  Lines                         ?     3755           
  Branches                      ?      455           
=====================================================
  Hits                          ?     3044           
  Misses                        ?      545           
  Partials                      ?      166           

Flag	Coverage Δ
all_tests	81.06% <0.00%> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 1c60253...4b695b0. Read the comment docs.