Update olafurpg/setup-scala for mdoc workflow

Author: majk-p

.github/workflows/mdoc.yml

@@ -32,7 +32,7 @@ jobs:
       - uses: actions/checkout@v2
         with:
           fetch-depth: 0
-      - uses: olafurpg/setup-scala@v10
+      - uses: olafurpg/setup-scala@v14
       - uses: olafurpg/setup-gpg@v3
       - name: Run mdoc
         run: sbt 'docs/mdoc'