flake.lock: Update

Flake lock file updates:

• Updated input 'emacs-overlay':
    'github:nix-community/emacs-overlay/2a294b099b479a62a5e37964dfe5ceb75e74fdd8' (2024-05-01)
  → 'github:nix-community/emacs-overlay/c20b99a4ea0750681a9aba949a91cce211c64dc5' (2024-05-15)
• Updated input 'emacs-overlay/nixpkgs':
    'github:NixOS/nixpkgs/58a1abdbae3217ca6b702f03d3b35125d88a2994' (2024-04-27)
  → 'github:NixOS/nixpkgs/2057814051972fa1453ddfb0d98badbea9b83c06' (2024-05-12)
• Updated input 'emacs-overlay/nixpkgs-stable':
    'github:NixOS/nixpkgs/576ecd43d3b864966b4423a853412d6177775e8b' (2024-04-29)
  → 'github:NixOS/nixpkgs/44072e24566c5bcc0b7aa9178a0104f4cfffab19' (2024-05-12)
• Updated input 'extra-package-copilot':
    'github:zerolfx/copilot.el/edf517a57f539eb41eaa2f92c6752538f3a62b72' (2024-04-15)
  → 'github:zerolfx/copilot.el/733bff26450255e092c10873580e9abfed8a81b8' (2024-05-01)
• Updated input 'extra-package-indent-bars':
    'github:jdtsmith/indent-bars/4974f6c16c7fcc8bbe53fbcd93c74794877287a1' (2024-04-21)
  → 'github:jdtsmith/indent-bars/74c08d82fd5c7cc01085504c92aef12c95823379' (2024-05-07)
• Updated input 'flake-parts':
    'github:hercules-ci/flake-parts/9126214d0a59633752a136528f5f3b9aa8565b7d' (2024-04-01)
  → 'github:hercules-ci/flake-parts/e5d10a24b66c3ea8f150e47dfdb0416ab7c3390e' (2024-05-02)
• Updated input 'flake-parts/nixpkgs-lib':
    'github:NixOS/nixpkgs/d8fe5e6c92d0d190646fb9f1056741a229980089?dir=lib' (2024-03-29)
  → '50eb7ecf4c.tar.gz?narHash=sha256-QBx10%2Bk6JWz6u7VsohfSw8g8hjdBZEf8CFzXH1/1Z94%3D' (2024-05-02)

flake.lock

@@ -7,11 +7,11 @@
         "nixpkgs-stable": "nixpkgs-stable"
       },
       "locked": {
-        "lastModified": 1715677691,
-        "narHash": "sha256-7mSjTx2jvm3NVuNfFNUkkUEuWdIBan9dP+BAIbWOJl8=",
+        "lastModified": 1715764046,
+        "narHash": "sha256-Xc0QLHMuNnbjmhrGtHz5wLnDJc3SFZq9xoUqE+xsOic=",
         "owner": "nix-community",
         "repo": "emacs-overlay",
-        "rev": "14922c0e5074b5532ab003cd0fa6b9003c666045",
+        "rev": "c20b99a4ea0750681a9aba949a91cce211c64dc5",
         "type": "github"
       },
       "original": {