chore: remove unused dependencies

[Ocheretovich]

Summary by CodeRabbit

• Chores
  • Cleaned up workspace dependency configurations across multiple internal modules. These updates streamline build management without affecting user-facing functionality.

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[coderabbitai]

Ohayo, sensei! 👋

Walkthrough

This PR removes workspace dependency and member declarations across three Cargo.toml files in the monorepo. Specifically, anyhow is unlinked from bin/cairo-bench, dunce and smol_str are removed from workspace members in scarb_metadata_ext, and reqwest (with json feature) and scarb-metadata are removed from xtask/generate-test-db. No functional code changes.

Changes

Cohort / File(s)	Summary
Workspace dependency removals bin/cairo-bench/Cargo.toml, xtask/generate-test-db/Cargo.toml	Removed workspace-managed dependencies: anyhow from cairo-bench; reqwest (with json feature) and scarb-metadata from generate-test-db
Workspace members cleanup crates/sozo/scarb_metadata_ext/Cargo.toml	Removed dunce and smol_str from workspace members list

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately summarizes the main change: removing unused dependencies from multiple Cargo.toml files across the codebase.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment

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