Bump actions/checkout from v2.3.3 to v2.3.4

Bumps [actions/checkout](https://github.com/actions/checkout) from v2.3.3 to v2.3.4.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v2.3.3...5a4ac90)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/auto-comment.yml

@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Code
-        uses: actions/[email protected].3
+        uses: actions/[email protected].4
         with:
           ref: master
       - name: Comment on (un)labeled issue/Pull request

.github/workflows/release_actions.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout Code
-      uses: actions/[email protected].3
+      uses: actions/[email protected].4
       with:
         ref: 'master'
     - name: Set up Java 11
@@ -34,7 +34,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout Code
-      uses: actions/[email protected].3
+      uses: actions/[email protected].4
     - name: Set up Java 8
       uses: actions/setup-java@v1
       with: