Merge pull request #154 from cquiroz/dependabot/github_actions/actions/checkout-v2.3.4

Update actions/checkout requirement to v2.3.4

Author: cquiroz

.github/workflows/release.yml

@@ -7,7 +7,7 @@ jobs:
   publish:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v2.3.4
       - uses: olafurpg/setup-scala@v10
       - uses: olafurpg/setup-gpg@v3
       - name: Publish

.github/workflows/scala.yml

@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v2.3.4
       - name: Set up JDK 1.8
         uses: olafurpg/setup-scala@v10
         with: