chore(ci): upgrade checkout to v6

.github/workflows/abi.yml

@@ -12,14 +12,14 @@ jobs:
 
     steps:
     - name: Clone current repository
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - name: Get the Git revision from the current repository
       id: get-rev
       run: echo "rev=$(cat ./storage-contracts-abis/0g-storage-contracts-rev)" >> $GITHUB_OUTPUT
 
     - name: Clone another repository
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
       with:
         repository: '0glabs/0g-storage-contracts'
         path: '0g-storage-contracts'

.github/workflows/cc.yml

@@ -29,7 +29,7 @@ jobs:
         swap-storage: true
 
     - name: Checkout sources
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
       with:
         submodules: recursive
 

.github/workflows/rust.yml

@@ -21,7 +21,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           submodules: recursive
       - name: Setup Rust (cache & toolchain)
@@ -37,7 +37,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           submodules: recursive
       - name: Setup Rust (cache & toolchain)
@@ -53,7 +53,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           submodules: recursive
       - name: Setup Rust (cache & toolchain)

.github/workflows/tests.yml

@@ -29,7 +29,7 @@ jobs:
         swap-storage: true
         
     - name: Checkout sources
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
       with:
         persist-credentials: false   # prevents writing the extraheader
         submodules: recursive