chore(deps): Update toml to 1.0.0

Update toml crate to v1 from 0.9. That, in turn, bumps msrv.
Fully qualify toml version

Author: Copilot

Cargo.lock

@@ -5,7 +5,7 @@ resolver = "2"
 repository = "https://github.com/rust-cli/config-rs"
 license = "MIT OR Apache-2.0"
 edition = "2018"
-rust-version = "1.75.0"  # MSRV
+rust-version = "1.76.0"  # MSRV
 include = [
   "build.rs",
   "src/**/*",
@@ -135,7 +135,7 @@ toml = ["dep:toml"]
 serde_core = "1.0.228"
 
 async-trait = { version = "0.1.89", optional = true }
-toml = { version = "0.9.6", optional = true, default-features = false, features = ["parse", "serde"] }
+toml = { version = "1.0.0", optional = true, default-features = false, features = ["parse", "serde"] }
 serde_json = { version = "1.0.145", optional = true }
 yaml-rust2 = { version = "0.10.4", optional = true }
 rust-ini = { version = "0.21.3", optional = true }