zig: Pin ZLS to v0.11.0 (#12173)

This PR updates the Zig extension to pin ZLS to v0.11.0, as the more
recent releases of ZLS don't have `.tar.gz` assets available.

Note that this depends on the next version of the `zed_extension_api`,
which has yet to be released.

Release Notes:

- N/A

extensions/zig/src/zig.rs

@@ -39,13 +39,11 @@ impl ZigExtension {
             &language_server_id,
             &zed::LanguageServerInstallationStatus::CheckingForUpdate,
         );
-        let release = zed::latest_github_release(
-            "zigtools/zls",
-            zed::GithubReleaseOptions {
-                require_assets: true,
-                pre_release: false,
-            },
-        )?;
+        // We're pinning ZLS to a release that has `.tar.gz` assets, since the latest release does not have
+        // them, at time of writing.
+        //
+        // ZLS tracking issue: https://github.com/zigtools/zls/issues/1879
+        let release = zed::github_release_by_tag_name("zigtools/zls", "0.11.0")?;
 
         let (platform, arch) = zed::current_platform();
         let asset_name = format!(