Use local sources for crate lsp-types

Index: Cargo.toml
--- Cargo.toml.orig
+++ Cargo.toml
@@ -129,9 +129,7 @@ libc = { version = "0.2.153" }
 libcst = { version = "1.8.4", default-features = false }
 log = { version = "0.4.17" }
 lsp-server = { version = "0.7.6" }
-lsp-types = { git = "https://github.com/astral-sh/lsp-types.git", rev = "e15db0593f0ecbbd80599c3f5880e4bf5da1ca0c", features = [
-    "proposed",
-] }
+lsp-types = { path = "../lsp-types", features = [ "proposed" ] }
 matchit = { version = "0.9.0" }
 memchr = { version = "2.7.1" }
 mimalloc = { version = "0.1.39" }
