Bump olafurpg/setup-scala from 11 to 12

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
...

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

.github/workflows/ci.yml

@@ -18,14 +18,14 @@ jobs:
             java: 8
     steps:
       - uses: actions/checkout@v2
-      - uses: olafurpg/setup-scala@v11
+      - uses: olafurpg/setup-scala@v12
       - name: Test
         run: sbt +test
   checks:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-      - uses: olafurpg/setup-scala@v11
+      - uses: olafurpg/setup-scala@v12
       - run: ./bin/scalafmt --check
       - run: sbt scalafixCheckAll
       - run: sbt coreJVM/mimaReportBinaryIssues

.github/workflows/release.yml

@@ -10,7 +10,7 @@ jobs:
       - uses: actions/checkout@v2
         with:
           fetch-depth: 0
-      - uses: olafurpg/setup-scala@v11
+      - uses: olafurpg/setup-scala@v12
       - uses: olafurpg/setup-gpg@v3
       - name: Publish ${{ github.ref }}
         run: sbt ci-release docs/docusaurusPublishGhpages