chore(deps): update rust crate convert_case to 0.8.0

Author: renovate[bot]

Cargo.toml

@@ -79,7 +79,7 @@ tree-sitter-md = {git="https://github.com/tree-sitter-grammars/tree-sitter-markd
 tree-sitter-yaml = "0.7.0"
 tree-sitter-toml-ng = "0.7.0"
 bytes = "1.10.0"
-convert_case = "0.7.1"
+convert_case = "0.8.0"
 serde = { version = "1.0.217", features = ["derive"] }
 serde_json = "1.0.138"
 anyhow = { version = "1.0.95", features = ["backtrace"] }