chore(deps): update protobufs digest to 678281c

[renovate]

This PR contains the following updates:

Package	Update	Change
protobufs (changelog)	digest	93b6436 → 678281c

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[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: af5c6353-3b48-41f4-9537-7f548bd02763

📥 Commits

Reviewing files that changed from the base of the PR and between 8d793f0 and cb9c695.

📒 Files selected for processing (1)

• protobufs

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📝 Walkthrough

Walkthrough

This PR updates the protobufs git submodule reference from one commit hash to another, with no other code changes.

Changes

Protobufs submodule update

Layer / File(s)	Summary
Update submodule pointer protobufs	The protobufs subproject commit pointer is advanced to a newer commit hash.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Possibly related issues

• Dependency Dashboard #12: Also updates the protobufs dependency/submodule pointer to a newer commit.

Possibly related PRs

• meshtastic/TAKPacket-SDK#87: Also only updates the protobufs submodule pointer with no other changes.
• meshtastic/TAKPacket-SDK#88: Also only updates the protobufs submodule pointer with no other changes.
• meshtastic/TAKPacket-SDK#89: Also only updates the protobufs submodule pointer with no other changes.

Poem

A hop, a skip, a pointer moves,
New commit hash, the submodule grooves,
No code to touch, just a tiny nudge,
This bunny approves without a grudge! 🐇

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly describes the protobufs dependency digest update and matches the only change in the PR.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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