fix(deps): update rust crate convert_case to 0.7.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
convert_case	dependencies	minor	0.6.0 -> 0.7.0
convert_case	workspace.dependencies	minor	0.6.0 -> 0.7.0

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[renovate]

⚠️ Artifact update problem

Renovate failed to update artifacts related to this branch. You probably do not want to merge this PR as-is.

♻ Renovate will retry this branch, including artifacts, only when one of the following happens:

• any of the package files in this branch needs updating, or
• the branch becomes conflicted, or
• you click the rebase/retry checkbox if found above, or
• you rename this PR's title to start with "rebase!" to trigger it manually

The artifact failure details are included below:

File name: Cargo.lock

Command failed: cargo update --config net.git-fetch-with-cli=true --manifest-path Cargo.toml --package [email protected] --precise 0.7.0
    Updating crates.io index
error: failed to select a version for the requirement `convert_case = "^0.6.0"`
candidate versions found which didn't match: 0.7.0
location searched: crates.io index
required by package `leptos_macro v0.7.3`
    ... which satisfies dependency `leptos_macro = "^0.7.3"` (locked to 0.7.3) of package `leptos v0.7.3`
    ... which satisfies dependency `leptos = "^0.7.2"` (locked to 0.7.3) of package `nghe_frontend v0.9.10 (/tmp/renovate/repos/github/vnghia/nghe/nghe-frontend)`

File name: Cargo.lock

Command failed: cargo update --config net.git-fetch-with-cli=true --manifest-path proc_macros/Cargo.toml --workspace
error: current package believes it's in a workspace when it's not:
current:   /tmp/renovate/repos/github/vnghia/nghe/proc_macros/Cargo.toml
workspace: /tmp/renovate/repos/github/vnghia/nghe/Cargo.toml

this may be fixable by adding `proc_macros` to the `workspace.members` array of the manifest located at: /tmp/renovate/repos/github/vnghia/nghe/Cargo.toml
Alternatively, to keep it out of the workspace, add the package to the `workspace.exclude` array, or add an empty `[workspace]` table to the package's manifest.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 76.48%. Comparing base (7eadc16) to head (31521be).
Report is 1 commits behind head on main.

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #654      +/-   ##
==========================================
- Coverage   76.71%   76.48%   -0.24%     
==========================================
  Files         192      192              
  Lines        5523     5523              
  Branches     5523     5523              
==========================================
- Hits         4237     4224      -13     
- Misses        706      720      +14     
+ Partials      580      579       -1     

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