Fix PR CI fallout

The PR CI lint job failed with clippy::semicolon-if-nothing-returned in gix-status/tests/status/index_as_worktree.rs after the keep-tree-cache call was expanded into a block closure. Add the requested semicolon so the closure has an explicit unit statement.

The fast-test matrix also failed after tests regenerated gix-index/tests/fixtures/generated-archives/v2_deeper_tree.tar and git diff reported the archive had changed. The archive still carried an older fixture identity, so regenerate it from the current v2_deeper_tree fixture script identity to prevent CI from rewriting it.

Author: codex

gix-index/tests/fixtures/generated-archives/v2_deeper_tree.tar

@@ -154,8 +154,10 @@ fn to_tree_rejects_missing_objects_unless_allowed() -> crate::Result {
     let err = state.to_tree(&objects, Default::default()).unwrap_err();
     assert!(matches!(err, gix_index::init::to_tree::Error::MissingObject { .. }));
 
-    let mut options = gix_index::init::to_tree::Options::default();
-    options.missing_ok = true;
+    let options = gix_index::init::to_tree::Options {
+        missing_ok: true,
+        ..Default::default()
+    };
     let actual = state.to_tree(&objects, options)?;
     assert_ne!(actual, gix_hash::Kind::Sha1.null());
     Ok(())

gix-index/tests/index/init.rs

@@ -836,7 +836,7 @@ fn refresh() {
                 index
                     .entries_mut_keep_tree_cache()
                     .iter_mut()
-                    .for_each(|e| e.stat = Default::default())
+                    .for_each(|e| e.stat = Default::default());
             },
             #[cfg(not(windows))]
             &[