chore(deps): advance ecc-dreamplace submodule

[zhaoxueyan1]

Summary

• Advance the ecc-dreamplace submodule from 08c2d224 to a1345a53.
• Pick up the routability legalization recovery, adaptive padding, GPUGR integration, and the latest ecc-dreamplace main fixes.

Validation

• The submodule's padding and macro placement unit tests pass.
• The sCPU 80% utilization placement case reaches a legal placement and writes its DEF with the updated submodule.

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