Bump actions/checkout from 3.6.0 to 4.0.0 (#409)

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](https://github.com/actions/checkout/compare/f43a0e5ff2bd294095638e18286ca9a3d1956744...3df4ab11eba7bda6032a0b82a6bb43b11571feac)

---
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>
diff --git a/.github/workflows/nightly.yml b/.github/workflows/nightly.yml
index 5eb5fb7..cea7eb8 100644
--- a/.github/workflows/nightly.yml
+++ b/.github/workflows/nightly.yml
@@ -49,7 +49,7 @@
     steps:
       -
         name: Checkout
-        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # https://github.com/actions/checkout/releases/tag/v3.6.0
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # https://github.com/actions/checkout/releases/tag/v4.0.0
       -
         name: Set up Go
         uses: actions/setup-go@93397bea11091df50f3d7e59dc26a7711a8bcfbe # https://github.com/actions/setup-go/releases/tag/v4.1.0
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index e7503d3..aa7ac2f 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -16,7 +16,7 @@
     steps:
       -
         name: Checkout
-        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # https://github.com/actions/checkout/releases/tag/v3.6.0
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # https://github.com/actions/checkout/releases/tag/v4.0.0
         with:
           ssh-key: "${{ secrets.GIT_SSH_PRIVATE_KEY }}"
       -
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 527eca4..3844e66 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -17,7 +17,7 @@
     timeout-minutes: 3
     steps:
       - name: Checkout Repo
-        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # https://github.com/actions/checkout/releases/tag/v3.6.0
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # https://github.com/actions/checkout/releases/tag/v4.0.0
       - name: Install copywrite
         uses: hashicorp/setup-copywrite@v1.1.2
       - name: Validate Header Compliance
@@ -59,7 +59,7 @@
     steps:
       -
         name: Checkout
-        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # https://github.com/actions/checkout/releases/tag/v3.6.0
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # https://github.com/actions/checkout/releases/tag/v4.0.0
       -
         name: Set up Go
         uses: actions/setup-go@93397bea11091df50f3d7e59dc26a7711a8bcfbe # https://github.com/actions/setup-go/releases/tag/v4.1.0
@@ -94,7 +94,7 @@
     steps:
       -
         name: Checkout
-        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # https://github.com/actions/checkout/releases/tag/v3.6.0
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # https://github.com/actions/checkout/releases/tag/v4.0.0
       -
         name: Set up Go
         uses: actions/setup-go@93397bea11091df50f3d7e59dc26a7711a8bcfbe # https://github.com/actions/setup-go/releases/tag/v4.1.0
@@ -145,7 +145,7 @@
     steps:
       -
         name: Checkout
-        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # https://github.com/actions/checkout/releases/tag/v3.6.0
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # https://github.com/actions/checkout/releases/tag/v4.0.0
       -
         name: Set up Go
         uses: actions/setup-go@93397bea11091df50f3d7e59dc26a7711a8bcfbe # https://github.com/actions/setup-go/releases/tag/v4.1.0