update nixpkgs

btcpayserver: 1.3.3 -> 1.3.6
electrs: 0.9.2 -> 0.9.3
lnd: 0.13.3-beta -> 0.14.1-beta
nbxplorer: 2.2.16 -> 2.2.18

electrs does not accept command line argument -vv anymore, so we have to use
--log-filter instead.

modules/electrs.nix

@@ -79,7 +79,8 @@ in {
         # electrs only uses the working directory for reading electrs.toml
         WorkingDirectory = "/run/electrs";
         ExecStart = ''
-          ${config.nix-bitcoin.pkgs.electrs}/bin/electrs -vv \
+          ${config.nix-bitcoin.pkgs.electrs}/bin/electrs \
+          --log-filters=INFO \
           --network=${bitcoind.makeNetworkName "bitcoin" "regtest"} \
           --db-dir='${cfg.dataDir}' \
           --daemon-dir='${bitcoind.dataDir}' \