chore(deps): update actions/checkout action to v6

Author: renovate[bot]

.github/workflows/test-gpu.yaml

@@ -21,7 +21,7 @@ jobs:
         go-version: ['1.21.x']
     steps:
       - name: Clone
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with: 
           submodules: true
       - name: Setup Go ${{ matrix.go-version }}

.github/workflows/test.yaml

@@ -14,7 +14,7 @@ jobs:
         go-version: ['1.21.x', 'stable']
     steps:
       - name: Clone
-        uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608 # v4
+        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6
         with: 
           submodules: true
       - name: Dependencies
@@ -39,7 +39,7 @@ jobs:
         go-version: ['1.21.x', 'stable']
     steps:
       - name: Clone
-        uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608 # v4
+        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6
         with: 
           submodules: true
       - name: Setup Go ${{ matrix.go-version }}
@@ -60,7 +60,7 @@ jobs:
         go-version: ['1.21.x', 'stable']
     steps:
       - name: Clone
-        uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608 # v4
+        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6
         with: 
           submodules: true
       - name: Setup Go ${{ matrix.go-version }}