Bump Zed to v1.20.0 (#63636)

Release Notes:

- N/A

Co-authored-by: zed-zippy[bot] <234243425+zed-zippy[bot]@users.noreply.github.com>

Cargo.lock

@@ -22761,7 +22761,7 @@ dependencies = [
 
 [[package]]
 name = "zed"
-version = "1.19.0"
+version = "1.20.0"
 dependencies = [
  "acp_thread",
  "acp_tools",

crates/zed/Cargo.toml

@@ -2,7 +2,7 @@
 description = "The fast, collaborative code editor."
 edition.workspace = true
 name = "zed"
-version = "1.19.0"
+version = "1.20.0"
 publish.workspace = true
 license = "GPL-3.0-or-later"
 authors = ["Zed Team <hi@zed.dev>"]