Introduce workspace dependencies (#12043)

# Description
This PR introduces [workspaces
dependencies](https://doc.rust-lang.org/cargo/reference/workspaces.html#the-dependencies-table).
The advantages are:
- a single place where dependency versions are declared
- reduces the number of files to change when upgrading a dependency
- reduces the risk of accidentally depending on 2 different versions of
the same dependency

I've only done a few so far. If this PR is accepted, I might continue
and progressively do the rest.

# User-Facing Changes
N/A

# Tests + Formatting
- 🟢 `toolkit fmt`
- 🟢 `toolkit clippy`
- 🟢 `toolkit test`
- 🟢 `toolkit test stdlib`

# After Submitting
N/A

crates/nu-color-config/Cargo.toml

@@ -12,9 +12,9 @@ bench = false
 
 [dependencies]
 nu-protocol = { path = "../nu-protocol", version = "0.91.1" }
-nu-ansi-term = "0.50.0"
 nu-engine = { path = "../nu-engine", version = "0.91.1" }
 nu-json = { path = "../nu-json", version = "0.91.1" }
+nu-ansi-term = { workspace = true }
 
 serde = { version = "1.0", features = ["derive"] }