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-cmd-extra/Cargo.toml

@@ -22,8 +22,8 @@ nu-utils = { path = "../nu-utils", version = "0.91.1" }
 # Potential dependencies for extras
 heck = "0.4.1"
 num-traits = "0.2"
-nu-ansi-term = "0.50.0"
-fancy-regex = "0.13.0"
+nu-ansi-term = { workspace = true }
+fancy-regex = { workspace = true }
 rust-embed = "8.2.0"
 serde = "1.0.164"
 nu-pretty-hex = { version = "0.91.1", path = "../nu-pretty-hex" }