Bump olafurpg/setup-scala from 12 to 13

Bumps [olafurpg/setup-scala](https://github.com/olafurpg/setup-scala) from 12 to 13.
- [Release notes](https://github.com/olafurpg/setup-scala/releases)
- [Commits](olafurpg/setup-scala@v12...v13)

---
updated-dependencies:
- dependency-name: olafurpg/setup-scala
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/release.yml

@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2.3.3
-      - uses: olafurpg/setup-scala@v12
+      - uses: olafurpg/setup-scala@v13
       - uses: actions/setup-node@v2.5.0
       - uses: olafurpg/setup-gpg@v3
       - name: Cache dependencies