Update olafurpg/setup-scala action to v13

Author: renovate-bot

.github/workflows/ci.yml

@@ -9,11 +9,11 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-      - uses: olafurpg/setup-scala@v12
+      - uses: olafurpg/setup-scala@v13
       - run: sbt test
   check:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-      - uses: olafurpg/setup-scala@v12
+      - uses: olafurpg/setup-scala@v13
       - run: sbt scalafmtCheckAll scalafmtSbtCheck "scalafixAll --check"

.github/workflows/release.yml

@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-      - uses: olafurpg/setup-scala@v12
+      - uses: olafurpg/setup-scala@v13
       - uses: olafurpg/setup-gpg@v3
       - run: git fetch --unshallow
       - name: Publish ${{ github.ref }}

.github/workflows/sourcegraph.yml

@@ -10,7 +10,7 @@ jobs:
     name: "Upload LSIF"
     steps:
       - uses: actions/checkout@v2
-      - uses: olafurpg/setup-scala@v12
+      - uses: olafurpg/setup-scala@v13
       - uses: actions/setup-go@v2
         with:
           go-version: "1.15.6"