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-lsp/Cargo.toml

@@ -12,15 +12,15 @@ nu-cli = { path = "../nu-cli", version = "0.91.1" }
 nu-parser = { path = "../nu-parser", version = "0.91.1" }
 nu-protocol = { path = "../nu-protocol", version = "0.91.1" }
 
-reedline = { version = "0.30" }
+reedline = { workspace = true }
 
 crossbeam-channel = "0.5.8"
 lsp-types = "0.95.0"
 lsp-server = "0.7.5"
-miette = "7.1"
+miette = { workspace = true }
 ropey = "1.6.1"
 serde = "1.0"
-serde_json = "1.0"
+serde_json = { workspace = true }
 
 [dev-dependencies]
 nu-cmd-lang = { path = "../nu-cmd-lang", version = "0.91.1" }