feat: upgrade elixir runtimes and dependencies (#78)

Upgrade [elixir][0] runtime from [1.16.2 to 1.16.3][1].

Also, [upgrade application dependencies][2]:

* `ecto_sql` from 3.11.1 to 3.11.2
* `phoenix_ecto` from 4.6.0 to 4.6.1
* `postgrex` from 0.17.5 to 0.18.0

Reviewed-on: #78

[0]: https://github.com/elixir-lang/elixir/releases/tag/v1.16.3
[1]: https://github.com/elixir-lang/elixir/compare/v1.16.2...v1.16.3
[2]: https://diff.hex.pm/diffs?diffs[]=ecto_sql:3.11.1:3.11.2&diffs[]=phoenix_ecto:4.6.0:4.6.1&diffs[]=postgrex:0.17.5:0.18.0
Co-authored-by: Joao P Dubas <joao.dubas+gitea@gmail.com>
Co-committed-by: Joao P Dubas <joao.dubas+gitea@gmail.com>

mix.exs

@@ -46,7 +46,7 @@ defmodule Wabanex.MixProject do
       {:phoenix_view, "~> 2.0.0"},
       {:phoenix_live_dashboard, "~> 0.8.0"},
       {:plug_cowboy, "~> 2.7.0"},
-      {:postgrex, "~> 0.17.0"},
+      {:postgrex, "~> 0.18.0"},
       {:prom_ex, "~> 1.9.0"},
       {:sobelow, "~> 0.13", only: [:dev, :test], runtime: false},
       {:telemetry_metrics, "~> 0.6.0"},