Bump actions/checkout from 3 to 4 (#196)

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] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/black.yml

@@ -20,7 +20,7 @@ jobs:
 
     steps:
       - name: Checkout Code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Set up Python 3.8
         uses: actions/setup-python@v4

.github/workflows/linux-ci.yml

@@ -22,7 +22,7 @@ jobs:
           - "3.10"            
         type: ["solc_upgrade", "linux","solc"]
     steps:    
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: actions/setup-python@v4
       with:
         python-version: ${{ matrix.python }}

.github/workflows/mac-ci.yml

@@ -22,7 +22,7 @@ jobs:
           - "3.10"      
         type: ["solc_upgrade", "macos", "solc"]
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: actions/setup-python@v4
       with:
         python-version: ${{ matrix.python }}

.github/workflows/pip-audit.yml

@@ -14,7 +14,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Install Python
         uses: actions/setup-python@v4

.github/workflows/pylint.yml

@@ -20,7 +20,7 @@ jobs:
 
     steps:
       - name: Checkout Code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Set up Python 3.8
         uses: actions/setup-python@v4

.github/workflows/release.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Set up Python
         uses: actions/setup-python@v4

.github/workflows/windows-ci.yml

@@ -22,7 +22,7 @@ jobs:
           - "3.10"                  
         type: ["windows","solc"]
     steps:    
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: actions/setup-python@v4
       with:
         python-version: ${{ matrix.python }}