chore(deps): Bump actions/checkout from 2.3.5 to 2.4.0 (#214)

Bumps [actions/checkout](https://github.com/actions/checkout) from 2.3.5 to 2.4.0.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v2.3.5...v2.4.0)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/code-style.yml

@@ -25,7 +25,7 @@ jobs:
                   git config --global core.eol lf
 
             - name: Checkout
-              uses: actions/checkout@v2.3.5
+              uses: actions/checkout@v2.4.0
               with:
                   fetch-depth: 1
 

.github/workflows/mutation-tests.yml

@@ -25,7 +25,7 @@ jobs:
                   git config --global core.eol lf
 
             - name: Checkout
-              uses: actions/checkout@v2.3.5
+              uses: actions/checkout@v2.4.0
               with:
                   fetch-depth: 1
 

.github/workflows/release.yaml

@@ -15,7 +15,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v2.3.5
+        uses: actions/checkout@v2.4.0
         with:
           fetch-depth: 1
 

.github/workflows/static-analysis.yml

@@ -25,7 +25,7 @@ jobs:
                   git config --global core.eol lf
 
             - name: Checkout
-              uses: actions/checkout@v2.3.5
+              uses: actions/checkout@v2.4.0
               with:
                   fetch-depth: 1
 

.github/workflows/tests.yml

@@ -25,7 +25,7 @@ jobs:
                   git config --global core.eol lf
 
             - name: Checkout
-              uses: actions/checkout@v2.3.5
+              uses: actions/checkout@v2.4.0
               with:
                   fetch-depth: 1