build(deps): bump actions/checkout from 2.3.5 to 2.4.0

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] <[email protected]>

.github/workflows/main.yml

@@ -15,7 +15,7 @@ jobs:
   build-host-win:
     runs-on: windows-latest
     steps:
-    - uses: actions/checkout@v2.3.5
+    - uses: actions/checkout@v2.4.0
       with:
         fetch-depth: 0
         submodules: recursive
@@ -44,7 +44,7 @@ jobs:
   build-host-osx:
     runs-on: macos-10.15
     steps:
-    - uses: actions/checkout@v2.3.5
+    - uses: actions/checkout@v2.4.0
       with:
         fetch-depth: 0
         submodules: recursive
@@ -76,7 +76,7 @@ jobs:
     runs-on: ubuntu-latest
     needs: [build-host-win, build-host-osx]
     steps:
-    - uses: actions/checkout@v2.3.5
+    - uses: actions/checkout@v2.4.0
     - name: Set up JDK 17
       uses: actions/setup-java@v2
       with:
@@ -108,7 +108,7 @@ jobs:
     runs-on: windows-latest
     needs: [build-jar]
     steps:
-    - uses: actions/checkout@v2.3.5
+    - uses: actions/checkout@v2.4.0
     - name: Set up JDK 17
       uses: actions/setup-java@v2
       with:
@@ -134,7 +134,7 @@ jobs:
     runs-on: macos-10.15
     needs: [build-jar]
     steps:
-    - uses: actions/checkout@v2.3.5
+    - uses: actions/checkout@v2.4.0
     - name: Set up JDK 17
       uses: actions/setup-java@v2
       with: