bump Rust Driver to 1.6.0 + later panic fix

[wprzytula]

CI tests are failing due to a panic in the Rust Driver, which was fixed in scylla-rust-driver/pull/1644, after 1.6.0 was released. This PR updates the driver to commit
e04a12a9950cb3d051288541d5439835098c5cc2 (the newest commit on Rust Driver's main branch), which should fix the CI tests.

Cargo.lock's changes were performed by running:

cargo update -p scylla-cql -p scylla-proxy -p scylla --manifest-path=scylla-rust-wrapper/Cargo.toml

Pre-review checklist

• I have split my patch into logically separate commits.
• All commit messages clearly explain what they change and why.
• PR description sums up the changes and reasons why they should be introduced.
• [ ] I have implemented Rust unit tests for the features/changes introduced.
• [ ] I have enabled appropriate tests in Makefile in {SCYLLA,CASSANDRA}_(NO_VALGRIND_)TEST_FILTER.
• [ ] I added appropriate Fixes: annotations to PR description.

Summary by CodeRabbit

• Chores
  • Updated Scylla-related dependencies to a newer upstream revision for both runtime and development builds.
  • No public API or exported entities changed; observable behavior should remain the same.
  • Keeps the project aligned with upstream fixes and improvements.

[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: 8723ef91-f1ce-49ee-a816-b800e718ecd3

📥 Commits

Reviewing files that changed from the base of the PR and between ae92850 and 938bf62.

⛔ Files ignored due to path filters (1)

• scylla-rust-wrapper/Cargo.lock is excluded by !**/*.lock

📒 Files selected for processing (1)

• scylla-rust-wrapper/Cargo.toml

✅ Files skipped from review due to trivial changes (1)

• scylla-rust-wrapper/Cargo.toml

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📝 Walkthrough

Walkthrough

This PR updates three Scylla crate dependencies to a specific git commit revision. The scylla production dependency and the scylla-proxy and scylla-cql development dependencies are all pinned to commit e04a12a9950cb3d051288541d5439835098c5cc2 replacing prior v1.5.0 tag references.

Changes

Dependency Revision Updates

Layer / File(s)	Summary
Scylla crate revisions update scylla-rust-wrapper/Cargo.toml	Scylla, scylla-proxy, and scylla-cql dependencies are updated to the same git revision e04a12a9950cb3d051288541d5439835098c5cc2, replacing the v1.5.0 tag references.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Poem

I hopped through Cargo.toml tonight,
Three crates nudged to one commit bright,
Tags to hashes, tidy and neat,
Locked in sync with a little beat,
A rabbit's stamp: dependencies right. 🐰

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately reflects the main change: updating the Rust driver to version 1.6.0 and including a subsequent panic fix.
Description check	✅ Passed	The PR description is complete and well-documented. It explains the motivation (fixing CI tests due to a panic), the specific commit being updated to, and the command used to update dependencies. The author properly marked non-applicable checklist items as skipped.
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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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[Copilot]

Pull request overview

This PR updates the scylla-rust-wrapper crate to use a newer upstream scylla-rust-driver commit (post-1.6.0) intended to fix a CI-failing panic, and refreshes the lockfile accordingly.

Changes:

• Pin scylla, scylla-cql, and scylla-proxy git dependencies to commit e04a12a9950cb3d051288541d5439835098c5cc2.
• Update Cargo.lock to reflect the new scylla* crate versions (1.6.0 / 0.0.6) and updated transitive dependencies.

Reviewed changes

Copilot reviewed 1 out of 2 changed files in this pull request and generated no comments.

File	Description
scylla-rust-wrapper/Cargo.toml	Pins Scylla Rust driver-related git dependencies to the specified upstream commit to pick up the panic fix.
scylla-rust-wrapper/Cargo.lock	Lockfile refresh to match the updated driver commit and its transitive dependency graph.

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[wprzytula]

Rebased on master, with the fix #463.

[wprzytula]

Force pushed just to trigger the checks, which (no idea why) didn't fire before.