Bump olafurpg/setup-scala from 11 to 12 (#357)

Bumps [olafurpg/setup-scala](https://github.com/olafurpg/setup-scala) from 11 to 12.
- [Release notes](https://github.com/olafurpg/setup-scala/releases)
- [Commits](olafurpg/setup-scala@v11...v12)

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

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

Author: dependabot[bot]

.github/workflows/release.yml

@@ -11,7 +11,7 @@ jobs:
       - uses: actions/checkout@v2.3.4
         with:
           fetch-depth: 0
-      - uses: olafurpg/setup-scala@v11
+      - uses: olafurpg/setup-scala@v12
       - run: sbt ci-release
         env:
           PGP_PASSPHRASE: ${{ secrets.PGP_PASSPHRASE }}