chore: add database native libraries to Nix dev shell

Added SQLite and DuckDB native libraries to the development shell to
support database clients (@db/sqlite, @duckdb/node-api). These clients
use Deno FFI and require native libraries at runtime. The LD_LIBRARY_PATH
configuration ensures FFI can locate the libraries.

Also updates nixpkgs to latest version via flake.lock refresh.

Author: lambdalisue

flake.lock

@@ -55,9 +55,19 @@
         devShells.default = pkgs.mkShell {
           packages = with pkgs; [
             deno
+            # Native library dependencies for database clients
+            stdenv.cc.cc.lib  # C++ standard library (required by most native bindings)
+            sqlite            # SQLite library (for @db/sqlite via FFI)
+            duckdb            # DuckDB library (for @duckdb/node-api)
           ];
 
           shellHook = ''
+            # Add native library paths for database clients
+            export LD_LIBRARY_PATH="${pkgs.lib.makeLibraryPath [
+              pkgs.stdenv.cc.cc.lib
+              pkgs.sqlite
+              pkgs.duckdb
+            ]}:$LD_LIBRARY_PATH"
             echo "Entering Probitas CLI development environment"
           '';
         };