chore: upgrade nostr-* packages to rev 4767ad13

- Update nostr-relay-builder, nostr-sdk, nostr-lmdb to latest revision
- Update grasp-audit nostr-sdk dependency
- Fix clippy warnings:
  - Replace .clone() with std::slice::from_ref() in src/git/sync.rs
  - Change &PathBuf to &Path in tests/common/git_server.rs
  - Replace vec![] with array literal in src/purgatory/sync/functions.rs
- Update PR_TEST_COMMIT_HASH in grasp-audit due to event generation changes

All 249 tests passing, no breaking changes required.

1 files changed, 1 insertions, 1 deletions

diff --git a/tests/common/git_server.rs b/tests/common/git_server.rs
index d0d727e..9fb62df 100644
--- a/tests/common/git_server.rs
+++ b/tests/common/git_server.rs
@@ -282,7 +282,7 @@ fn is_safe_path(path: &Path, repo_path: &Path) -> bool {
 }
 
 /// Guess the content type for a git-related file.
-fn guess_content_type(path: &PathBuf) -> &'static str {
+fn guess_content_type(path: &Path) -> &'static str {
     let filename = path.file_name().and_then(|n| n.to_str()).unwrap_or("");
 
     if filename == "info/refs" || filename == "refs" {