chore(deps): update hexpm/elixir docker tag to v1.16.2

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [elixir](https://elixir-lang.org/) ([source](https://github.com/elixir-lang/elixir)) | patch | `1.16.1` -> `1.16.2` |

---

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Reviewed-on: #64
Co-authored-by: renovate-bot <renovate-bot@dubas.dev>
Co-committed-by: renovate-bot <renovate-bot@dubas.dev>

.tool-versions

@@ -1,2 +1,2 @@
 erlang 26.2.2
-elixir 1.16.1
+elixir 1.16.2

Dockerfile

@@ -1,4 +1,4 @@
-FROM hexpm/elixir:1.16.1-erlang-26.2.2-debian-bookworm-20240130-slim AS builder
+FROM hexpm/elixir:1.16.2-erlang-26.2.2-debian-bookworm-20240130-slim AS builder
 
 RUN apt-get update \
   && apt-get -y install make