chore: update actions/checkout to v4 (#2530)

.github/workflows/awesome_workflow.yml

@@ -8,7 +8,7 @@ jobs:
     name: Code Formatter
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
       - uses: actions/setup-python@v4
@@ -56,7 +56,7 @@ jobs:
       matrix:
         os: [ubuntu-latest, windows-latest, macOS-latest]
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           submodules: true
       - run: |

.github/workflows/codeql.yml

@@ -32,7 +32,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       # Initializes the CodeQL tools for scanning.
       - name: Initialize CodeQL

.github/workflows/directory_writer.yml

@@ -17,7 +17,7 @@ jobs:
     if: github.repository == 'TheAlgorithms/C-Plus-Plus' # We only need this to run in our repository.
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
       - name: Build directory

.github/workflows/gh-pages.yml

@@ -8,7 +8,7 @@ jobs:
   build:
     runs-on: macos-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           submodules: true
       - name: Install requirements
@@ -19,7 +19,7 @@ jobs:
       - name: build
         run: cmake --build build -t doc
       - name: gh-pages
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           ref: "gh-pages"
           clean: false