remote_server: Remove dependency on libssl and libcrypto (#15446)

Fixes: #15599
Release Notes:

- N/A

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Co-authored-by: Mikayla <mikayla@zed.dev>
Co-authored-by: Conrad <conrad@zed.dev>

crates/auto_update/Cargo.toml

@@ -19,7 +19,6 @@ db.workspace = true
 editor.workspace = true
 gpui.workspace = true
 http_client.workspace = true
-isahc.workspace = true
 log.workspace = true
 markdown_preview.workspace = true
 menu.workspace = true