build(deps): bump nixos/nix from 2.34.1 to 2.34.4 (#477)

Bumps nixos/nix from 2.34.1 to 2.34.4.

---
updated-dependencies:
- dependency-name: nixos/nix
  dependency-version: 2.34.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Dockerfile

@@ -1,4 +1,4 @@
-FROM --platform=$BUILDPLATFORM docker.io/nixos/nix:2.34.1 AS builder
+FROM --platform=$BUILDPLATFORM docker.io/nixos/nix:2.34.4 AS builder
 
 COPY . /tmp/build
 WORKDIR /tmp/build