Cleanup dependencies (part 4) (#8468)

Follow-up to #8425 . Final part - adds the CI check.

Release Notes:
- N/A

crates/feedback/Cargo.toml

@@ -22,22 +22,16 @@ gpui.workspace = true
 human_bytes = "0.4.1"
 isahc.workspace = true
 language.workspace = true
-lazy_static.workspace = true
 log.workspace = true
 menu.workspace = true
-postage.workspace = true
 project.workspace = true
 regex.workspace = true
 release_channel.workspace = true
 serde.workspace = true
 serde_derive.workspace = true
 serde_json.workspace = true
-settings.workspace = true
-smallvec.workspace = true
 smol.workspace = true
 sysinfo.workspace = true
-theme.workspace = true
-tree-sitter-markdown = { git = "https://github.com/MDeiml/tree-sitter-markdown", rev = "330ecab87a3e3a7211ac69bbadc19eabecdb1cca" }
 ui.workspace = true
 urlencoding = "2.1.2"
 util.workspace = true