chore: bump nix flake rust nightly `fmt` overlay

update the rust nightly `fmt` overlay which needs to be pinned
to a specific version (this case by date)

update formatting in main files via `cargo fmt`

1 files changed, 1 insertions, 1 deletions

diff --git a/src/bin/ngit/sub_commands/export_keys.rs b/src/bin/ngit/sub_commands/export_keys.rs
index 54a716f..45b1b89 100644
--- a/src/bin/ngit/sub_commands/export_keys.rs
+++ b/src/bin/ngit/sub_commands/export_keys.rs
@@ -2,9 +2,9 @@ use anyhow::{Context, Result};
 use ngit::{
     cli_interactor::{Interactor, InteractorPrompt, PromptChoiceParms},
     login::{
+        SignerInfo, SignerInfoSource,
         existing::{get_signer_info, load_existing_login},
         fresh::generate_qr,
-        SignerInfo, SignerInfoSource,
     },
 };