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/src/purgatory/sync/functions.rs b/src/purgatory/sync/functions.rs
index 370990e..0139ac5 100644
--- a/src/purgatory/sync/functions.rs
+++ b/src/purgatory/sync/functions.rs
@@ -930,7 +930,7 @@ mod tests {
                 .expect("Should return a second URL");
 
         // Both URLs should be available (one from announcement, one from PR)
-        let both_urls = vec![first_url, second_url];
+        let both_urls = [first_url, second_url];
         assert!(
             both_urls.iter().any(|u| u.contains("github.com")),
             "Should include announcement URL"