Bump actions/checkout from 1 to 4

Bumps [actions/checkout](https://github.com/actions/checkout) from 1 to 4.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v1...v4)

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

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

.github/workflows/audit.yml

@@ -13,7 +13,7 @@ jobs:
   security_audit:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v4
       - uses: actions-rs/audit-check@v1
         with:
           token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/check-changelog.yml

@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout code
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
       with:
         fetch-depth: 2 # Only need preceeding commit
 

.github/workflows/ci.yml

@@ -28,7 +28,7 @@ jobs:
             components: "clippy"
             command: cargo clippy --all-features
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: actions-rust-lang/[email protected]
         with:
           components: ${{matrix.components}}
@@ -41,14 +41,14 @@ jobs:
   cargo-deny: # only runs on Linux
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: EmbarkStudios/cargo-deny-action@v1
 
   test:
     name: Test Suite
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: actions-rust-lang/[email protected]
       - name: Install Protobuf
         uses: ./.github/actions/install-protobuf
@@ -60,7 +60,7 @@ jobs:
     name: Integration Tests
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: actions-rust-lang/[email protected]
       - name: Install Protobuf
         uses: ./.github/actions/install-protobuf
@@ -75,7 +75,7 @@ jobs:
       matrix:
         crate: [lading_throttle, lading_payload]
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: actions-rust-lang/[email protected]
       - name: Install Protobuf
         uses: ./.github/actions/install-protobuf
@@ -90,7 +90,7 @@ jobs:
     steps:
       # Check our protobufs for lint cleanliness and for lack of breaking
       # changes
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: buf-setup
         uses: bufbuild/[email protected]
       - name: buf-lint

.github/workflows/release.yml

@@ -12,7 +12,7 @@ jobs:
   create-release:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
       - name: Create GitHub release
         uses: taiki-e/create-gh-release-action@v1
@@ -51,7 +51,7 @@ jobs:
     runs-on: ${{ matrix.os }}
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
       - name: Install protobuf (Apt)
         run: sudo apt-get update && sudo apt-get install -y protobuf-compiler
@@ -109,7 +109,7 @@ jobs:
   crates-io-publish:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
       - name: Install protobuf
         run: sudo apt-get update && sudo apt-get install -y protobuf-compiler