Bump OpenSTA

[akashlevy]

No description provided.

[greptile-apps]

Greptile Summary

This PR advances the third_party/OpenSTA git submodule pointer from commit 2d2cfe6 to 746060e, following the OpenSTA 3.0 migration that landed in PR #57 just one commit ago.

• The entire diff is a single submodule pointer change — no project source files are modified.
• Because the submodule history is not mirrored in this repo, the specific OpenSTA commits included in this bump are not visible from the diff alone; a short PR description noting what bug-fix or feature motivated the bump would help future bisecting.

Confidence Score: 4/5

Safe to merge; the only change is advancing a submodule pointer with no accompanying source modifications.

The bump brings in upstream OpenSTA commits whose contents are not introspectable from this diff. If any breaking API change were introduced between the old and new OpenSTA commits it would only surface at build/test time, not in code review. The pattern of frequent OpenSTA bumps in this repo's history suggests this is routine maintenance.

No files require special attention beyond confirming that CI passes with the updated submodule.

Important Files Changed

Filename	Overview
third_party/OpenSTA	Submodule pointer updated from 2d2cfe6 to 746060e; no in-repo source changes accompany the bump.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A[silisizer main repo] -->|references submodule| B[third_party/OpenSTA]
    B -->|old pointer| C["commit 2d2cfe6\n(OpenSTA 3.0 base)"]
    B -->|new pointer| D["commit 746060e\n(bumped OpenSTA)"]
    D -->|upstream| E[The-OpenROAD-Project/OpenSTA]
    A -->|builds against| B

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