Cherry-pick: Fix MSSQL int auto-increment cast to bigserial instead of serial (#1596)

[GingerAdonis]

Upstream PR

dimitri#1596

Summary

MSSQL int is 4 bytes, so auto-increment should cast to PostgreSQL serial (4 bytes), not bigserial (8 bytes).

Files

• src/sources/mssql/mssql-cast-rules.lisp

Notes

• Low risk, 1-line change
• Fixes upstream Incorrect default cast from MSSQL int (auto-increment) to PG bigserial dimitri/pgloader#1590
• Priority: Medium