chore(docker): upgrade erlang to 27.3.3 (#140)

Upgrade docker image for [`elixir:1.18.3-erlang-27.3.3-debian-bookworm-20250407-slim`][0].

Reviewed-on: #140

[0]: https://hub.docker.com/layers/hexpm/elixir/1.18.3-erlang-27.3.3-debian-bookworm-20250407-slim/images/sha256-88627ea2786f2e9ad7520d0f12bc7a9266ea0d6e7f89f2e0e278404263d470a4
Co-authored-by: Joao P Dubas <joao.dubas+gitea@gmail.com>
Co-committed-by: Joao P Dubas <joao.dubas+gitea@gmail.com>

.drone.yml

@@ -44,7 +44,7 @@ steps:
         path: /drone/src/deps
 
   - name: dependencies and compile
-    image: &elixir 'hexpm/elixir:1.18.3-erlang-27.3.2-debian-bookworm-20250407-slim'
+    image: &elixir 'hexpm/elixir:1.18.3-erlang-27.3.3-debian-bookworm-20250407-slim'
     commands:
       - apt-get update
       - apt-get install -y git make