Bump actions/checkout to v2

Signed-off-by: Kohei Tokunaga <[email protected]>

.github/workflows/benchmark.yml

@@ -12,7 +12,7 @@ jobs:
     steps:
     - name: Install gnuplot
       run: sudo apt-get --no-install-recommends install -y gnuplot
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2
     - name: Prepare output directory
       run: mkdir "${BENCHMARK_RESULT_DIR}"
     - name: Run benchmark

.github/workflows/tests.yml

@@ -6,48 +6,48 @@ jobs:
     runs-on: ubuntu-18.04
     name: Build
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2
     - name: Build all
       run: ./script/util/make.sh build -j2
   test:
     runs-on: ubuntu-18.04
     name: Test
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2
     - name: Test all
       run: ./script/util/make.sh test-all -j2
   check:
     runs-on: ubuntu-18.04
     name: Check
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2
     - name: Check all
       run: ./script/util/make.sh install-check-tools check
   integration:
     runs-on: ubuntu-18.04
     name: Integration
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2
     - name: Run integration test
       run: make integration
   test-optimize:
     runs-on: ubuntu-18.04
     name: Optimize
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2
     - name: Run test for optimize subcommand of ctr-remote
       run: make test-optimize
   test-pullsecrets:
     runs-on: ubuntu-18.04
     name: PullSecrets
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2
     - name: Run test for pulling image from private registry on Kubernetes
       run: make test-pullsecrets
   test-cri:
     runs-on: ubuntu-18.04
     name: CRIValidation
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2
     - name: Varidate the runtime through CRI
       run: make test-cri