Fix multi-line DML statement detection

[RustedBones]

Use DOTALL mode to match multi-line DML statement

Fix #5136

[codecov]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (3a6bc46) 63.57% compared to head (966b718) 63.57%.
Report is 1 commits behind head on main.

Files	Patch %	Lines
...la/com/spotify/scio/bigquery/client/BigQuery.scala	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5169      +/-   ##
==========================================
- Coverage   63.57%   63.57%   -0.01%     
==========================================
  Files         295      295              
  Lines       10928    10928              
  Branches      731      731              
==========================================
- Hits         6948     6947       -1     
- Misses       3980     3981       +1     

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