Bump actions/setup-java from v1 to v2 (#2736)

Bumps [actions/setup-java](https://github.com/actions/setup-java) from v1 to v2.
- [Release notes](https://github.com/actions/setup-java/releases)
- [Commits](https://github.com/actions/setup-java/compare/v1...8764a52df183aa0ccea74521dfd9d506ffc7a19a)

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: kenji yoshida <6b656e6a69@gmail.com>

.github/workflows/build.yml

@@ -22,9 +22,10 @@ jobs:
           ~/.cache/coursier/v1
         key: build-${{ env.cache-name }}-${{ hashFiles('build.sbt') }}
     - name: Set up JDK
-      uses: actions/setup-java@v1
+      uses: actions/setup-java@v2
       with:
         java-version: ${{ matrix.java }}
+        distribution: adopt
     - name: Run tests
       run: sbt scalafmtSbtCheck scalafmtCheck test:scalafmtCheck test
     - name: Build executable