Bump erlef/setup-beam from 1.17.6 to 1.18.0

Bumps [erlef/setup-beam](https://github.com/erlef/setup-beam) from 1.17.6 to 1.18.0.
- [Release notes](https://github.com/erlef/setup-beam/releases)
- [Commits](erlef/setup-beam@0a54116...a6e26b2)

---
updated-dependencies:
- dependency-name: erlef/setup-beam
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/test.yml

@@ -14,7 +14,7 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332
 
-      - uses: erlef/setup-beam@0a541161e47ec43ccbd9510053c5f336ca76c2a2
+      - uses: erlef/setup-beam@a6e26b22319003294c58386b6f25edbc7336819a
         with:
           otp-version: "26.2"
           gleam-version: "1.1.0"