Bump actions/checkout from 3 to 4 (#55)

Bumps [actions/checkout](https://github.com/actions/checkout) from 3 to 4.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v3...v4)

---
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/coverage.yml

@@ -24,7 +24,7 @@ jobs:
         run: |
           sudo apt install -y protobuf-compiler
 
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: ⚡ Cargo Cache
         uses: actions/cache@v3
         with:
@@ -34,7 +34,7 @@ jobs:
             target
           key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
 
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: 🔬 Run cargo-tarpaulin
         uses: actions-rs/tarpaulin@v0.1

.github/workflows/lint.yml

@@ -19,7 +19,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout source code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: ✅ Run rustfmt
         uses: actions-rs/cargo@v1
@@ -31,13 +31,13 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout source code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: ⚙ Install protobuf compiler
         run: |
           sudo apt install -y protobuf-compiler
 
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: ⚡ Cargo Cache
         uses: actions/cache@v3
         with:

.github/workflows/test.yml

@@ -24,7 +24,7 @@ jobs:
         run: |
           sudo apt install -y protobuf-compiler
 
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: ⚡ Cargo Cache
         uses: actions/cache@v3
         with:
@@ -34,7 +34,7 @@ jobs:
             target
           key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
 
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - uses: actions-rs/cargo@v1
         name: 🔨 Build