bugfix: Install sbt to fix CI

Author: tgodzik

.github/workflows/release-website.yml

@@ -18,6 +18,7 @@ jobs:
           distribution: 'temurin'
           java-version: 17
           cache: 'sbt'
+      - uses: sbt/setup-sbt@v1
       - name: Publish
         run: |
           sbt docs/docusaurusPublishGhpages

.github/workflows/sbt-dependency-graph.yml

@@ -12,4 +12,5 @@ jobs:
       - uses: actions/checkout@v4
         with:
           submodules: true
+      - uses: sbt/setup-sbt@v1
       - uses: scalacenter/sbt-dependency-submission@v3