chore(deps): update flake.lock and flake.pkgs for dependency versions

- Updated nixpkgs revision and narHash in flake.lock.
- Upgraded expat to version 2.7.3 and openssl to version 3.4.3 in flake.pkgs.
- Modified flake-package-versions command in Makefile for improved output.

Makefile

@@ -141,10 +141,10 @@ nix-flake-update:
 
 .SILENT: flake-package-versions
 flake-package-versions:
-	nix develop --command -- bash -c \
+	nix develop --command bash -c \
 		'nix derivation show \
 			$$(echo $$PATH | tr ":" "\n" | grep "/nix/store" | sort -u) \
-			| jq -r ".[].name" | sort -u'
+			| jq -r ".derivations[].name" | sort -u'
 
 flake.pkgs: flake.nix flake.lock
 	$(MAKE) flake-package-versions > "$@"

flake.lock

@@ -20,11 +20,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1757545623,
-        "narHash": "sha256-mCxPABZ6jRjUQx3bPP4vjA68ETbPLNz9V2pk9tO7pRQ=",
+        "lastModified": 1767313136,
+        "narHash": "sha256-16KkgfdYqjaeRGBaYsNrhPRRENs0qzkQVUooNHtoy2w=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "8cd5ce828d5d1d16feff37340171a98fc3bf6526",
+        "rev": "ac62194c3917d5f474c1a844b6fd6da2db95077d",
         "type": "github"
       },
       "original": {

flake.pkgs

@@ -13,7 +13,7 @@ coreutils-9.7
 curl-8.14.1
 dbus-1.14.10
 diffutils-3.12
-expat-2.7.1
+expat-2.7.3
 file-5.45
 findutils-4.10.0
 fontconfig-2.16.0
@@ -53,7 +53,7 @@ libxml2-2.13.8
 mailutils-3.18
 nettle-3.10.1
 nghttp2-1.65.0
-openssl-3.4.2
+openssl-3.4.3
 patch-2.7.6
 pkg-config-wrapper-0.29.2
 python3-3.13.5