chore: update opensta to add sdc collection support

[donn]

No description provided.

[greptile-apps]

Greptile Summary

This PR bumps the third_party/OpenSTA submodule (Silimate fork) from commit 56337c2 to 66317a7 to pull in SDC collection support. No source files in the main repository are modified.

Confidence Score: 5/5

Safe to merge — this is a dependency-only submodule bump with no changes to main repository source code.

The entire change is a single submodule pointer update. No logic, build configuration, or source files in the main repo were modified. The risk is limited to the new OpenSTA commit introducing a regression, which is mitigated by the scoped nature of 'SDC collection support' as an additive feature.

No files require special attention.

Vulnerabilities

No security concerns identified. This is a submodule pointer update with no changes to authentication, data handling, or network-facing code in the main repository.

Important Files Changed

Filename	Overview
third_party/OpenSTA	Submodule pointer bumped from 56337c2 to 66317a7 to add SDC collection support; no main-repo source changes.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A[silisizer-bin] --> B[silisizer library]
    B --> C[OpenSTA @ 66317a7\n+SDC collection support]
    B --> D[backward-cpp]
    C --> E[TCL runtime]
    B --> E

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_{Reviews (1): Last reviewed commit: "chore: update opensta to add sdc collect..." | Re-trigger Greptile}

[akashlevy]

Should use OpenSTA main and have all tests passing