Bump actions/checkout from 2 to 4

.github/workflows/cargo-audit.yml

@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout source code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Run `cargo-audit`
         uses: actions-rs/audit-check@v1

.github/workflows/check-version-bumped-aggregator.yml

@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
       - name: check-cargo-toml-version-bumped

.github/workflows/check-version-bumped-elections.yml

@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
       - name: check-cargo-toml-version-bumped

.github/workflows/check-version-bumped-finality-gadget.yml

@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
       - name: check-cargo-toml-version-bumped

.github/workflows/check-version-bumped-runtime-companion.yml

@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
       - name: check-cargo-toml-version-bumped

.github/workflows/coverage.yml

@@ -28,7 +28,7 @@ jobs:
         with:
           access_token: ${{ github.token }}
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           submodules: recursive
       - name: Install toolchain

.github/workflows/tests.yml

@@ -30,7 +30,7 @@ jobs:
       SCCACHE_CACHE_SIZE: "50G"
     needs: cancel
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Install toolchain
       uses: dtolnay/rust-toolchain@nightly
       with: