Replace grpcio-tools version pin with range from nanopb

[vidplace7]

grpcio-tools is pinned to >=1.43 in nanopb (where it's consumed), so match this behavior.

This was previously causing grpcio-tools to be downloaded upon every firmware build when the grpcio-tools version is not latest.

Summary by CodeRabbit

• Chores
  • Updated the grpcio-tools version requirement to support compatible releases while avoiding breaking major-version upgrades.
  • Clarified dependency compatibility requirements in the project configuration.

[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: b325ac41-a0ce-4e0e-b575-b7585830679a

📥 Commits

Reviewing files that changed from the base of the PR and between 82dfc3d and ca63798.

📒 Files selected for processing (1)

• requirements.txt

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📝 Walkthrough

Walkthrough

The grpcio-tools requirement now accepts versions from 1.43.0 up to, but excluding, 2.0, with comments documenting the constraint and related dependency ordering adjusted.

Changes

Dependency update

Layer / File(s)	Summary
grpcio-tools version constraint requirements.txt	Changes grpcio-tools from an exact pin to >=1.43.0,<2 and adds explanatory comments.

Estimated code review effort: 1 (Trivial) | ~3 minutes

Possibly related PRs

• meshtastic/gh-action-firmware#46: Modifies the same grpcio-tools dependency line in requirements.txt.

Suggested labels: dependencies, python

Poem

A bunny checks the version line,
From one fixed pin to ranges fine.
No major leap shall break the build,
While nanopb’s needs are fulfilled.
Hop, hop—dependencies aligned!

🚥 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 summarizes the main change: replacing the grpcio-tools pin with the nanopb-compatible version range.
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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