chore: update Rust dependencies and refactor code

[reubenmiller]

Proposed changes

Update Rust dependences (crates) to the latest version which required some code additional code changes due to breaking changes being introduced.

The following details the reason why some of the remaining dependencies that can't/won't be updated in this PR.

Update in separate PR

nix

Upgrading nix will require more changes which are best done in a separate PR. #3879 has been created to track the upgrade.

dependency	current	upgrade
nix	0.26.4	0.30.1

Unable to update

The following dependencies are not able to be currently updated for the following reasons.

rasn - currently uses unstable Rust api in Rust 1.85

The newer versions of rasn uses unsigned_is_multiple_of which is still marked as unstable in the current MSRV (1.85). This means that the crates can't be updated until the MSRV is bumped to Rust 1.87 where the language feature was stabilized.

dependency	current	upgrade
rasn	0.26.6	0.28.1
rasn-cms	0.26.6	0.28.1

async-tungstenite

There is a version dependency between ws_stream_tungstenite and async-tungstenite which is preventing upgrading async-tungstenite to the latest available version.

dependency	current	upgrade
async-tungstenite	0.29.1	0.32.0

Types of changes

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Improvement (general improvements like code refactoring that doesn't explicitly fix a bug or add any new functionality)
• Documentation Update (if none of the other choices apply)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Paste Link to the issue

Checklist

• I have read the CONTRIBUTING doc
• I have signed the CLA (in all commits with git commit -s. You can activate automatic signing by running just prepare-dev once)
• I ran just format as mentioned in CODING_GUIDELINES
• I used just check as mentioned in CODING_GUIDELINES
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)

Further comments

[codecov]

Codecov Report

❌ Patch coverage is 0% with 14 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
crates/core/tedge_watchdog/src/systemd_watchdog.rs	0.00%	11 Missing ⚠️
crates/common/tedge_utils/src/notify.rs	0.00%	0 Missing and 1 partial ⚠️
...tes/core/tedge/src/cli/certificate/c8y/download.rs	0.00%	1 Missing ⚠️
...rates/core/tedge/src/cli/certificate/c8y/upload.rs	0.00%	1 Missing ⚠️

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[github-actions]

Robot Results

✅ Passed	❌ Failed	⏭️ Skipped	Total	Pass %	⏱️ Duration
743	0	3	743	100	2h22m12.203265999s

[didier-wenzek]

Approved