Prepare for v1.2.0

[samansmink]

@Mytherin

• applied upstream patch
• bumped submodules to main
• bumped ci to main

1 test failure remaining: https://github.com/samansmink/duckdb_mysql/actions/runs/12652013004/job/35253758231#step:9:40

Query unexpectedly failed! (/Users/runner/work/duckdb_mysql/duckdb_mysql/test/sql/attach_update.test:43)!
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UPDATE s1.test SET i = NULL WHERE i = 2;
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Not implemented Error: Unsupported operator type PROJECTION in UPDATE statement - only simple deletes (e.g. UPDATE FROM tbl WHERE x=y) are supported in the MySQL connector
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