Bump actions/checkout from 3.6.0 to 4.0.0 (#75)

Bumps [actions/checkout](https://github.com/actions/checkout) from 3.6.0 to 4.0.0.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@f43a0e5...3df4ab1)

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

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

.github/workflows/nightly.yml

@@ -12,7 +12,7 @@ jobs:
         os: [ubuntu-18.04, macos-10.15, windows-2016]
         javaToBuild: [jdk11u, jdk17u]
     steps:
-    - uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3.6.0
+    - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4.0.0
     - uses: adoptium/build-jdk@2f4b8fc221a368382953dadd191d60da48a67063 # v1.0.4
       id: buildJDK
       with:
@@ -26,7 +26,7 @@ jobs:
         os: [ubuntu-18.04, macos-10.15]
         javaToBuild: [jdk11u, jdk17u]
     steps:
-    - uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3.6.0
+    - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4.0.0
     - uses: adoptium/build-jdk@2f4b8fc221a368382953dadd191d60da48a67063 # v1.0.4
       id: buildJDK
       with:

.github/workflows/test.yml

@@ -13,7 +13,7 @@ jobs:
         os: [ubuntu-18.04, macos-10.15, windows-2016]
         javaToBuild: [jdk11u, jdk17u]
     steps:
-    - uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3.6.0
+    - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4.0.0
     - uses: ./
       id: buildJDK
       with:
@@ -27,7 +27,7 @@ jobs:
         os: [ubuntu-18.04, macos-10.15]
         javaToBuild: [jdk11u, jdk17u]
     steps:
-    - uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3.6.0
+    - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4.0.0
     - uses: ./
       id: buildJDK
       with: